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行動 vs. 不行動の後悔

子供を持つか持たないか

行動した場合

子どもを持つ

8.0%

行動しなかった場合

子どもを持たない

7.0%

それぞれの選択を後で後悔した人の割合。バーと完全な記録は下に表示されます。


家族

最終確認 2026-04-25

証拠の質 4.38/5

8次元のレビュー評価。基準は 品質ルーブリック 。各次元は1〜5で評価。

D1 出典の検証
5/5
D2 出典の権威性と独立性
4/5
D3 後悔率の正確性
3/5
D4 出典の比較可能性
3/5
D5 ギロヴィッチ・パターン
5/5
D6 文章の質
5/5
D7 注意事項の完全性
5/5
D8 サンプルの質
5/5
平均 4.38/5
Two diverging paths through a quiet park, one leading toward a playground silhouette, the other into open fields.

行動への後悔

子どもを持つ

8.0%

親の8%

子を持つ英国成人、全国代表

遡及的、固定期間なし

不作為への後悔

子どもを持たない

7.0%

子のない成人の約7%が親と同程度の人生の後悔を報告(代替指標 — 注意事項参照)

70歳以上の子のない米国成人

遡及的、70歳以上

この選択を後悔した割合

balanced — ほぼ均衡 — どちらの選択も同程度の後悔を伴います。

関連する決断

意味的に類似する決断 — 同じ領域、異なるトレードオフ。

family

専業 vs 共働き

この選択を後悔した割合

行動が優勢

行動の後悔が1.3倍高い

family

家族の人数

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.6倍高い

family

養子縁組 vs. 自ら育てる

この選択を後悔した割合

行動が優勢

行動の後悔が4.8倍高い

family

早期 vs. 晩期の親になること

この選択を後悔した割合

不作為が優勢

不作為の後悔が1.7倍高い

健康直接

割礼の決断

この選択を後悔した割合

均衡

ほぼ均衡

family

もう一人 vs. 止める

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.6倍高い

family

代理出産 vs. 子なし生活

この選択を後悔した割合

不作為が優勢

不作為の後悔が2.1倍高い

family

老人ホーム vs. 在宅介護

この選択を後悔した割合

行動が優勢

行動の後悔が2.3倍高い

About 8% of parents report regretting having children, a figure that holds in the same order of magnitude across surveys in the UK (YouGov) and Poland (Piotrowski). The Polish figures run somewhat higher — 13.6% among parents aged 18-40 in one national sample and 10.7% among the emerging-adult subset aged 18-30 in a separate sample — though these are two distinct studies from the same research program rather than one cohort tracked over time, so the gap between them should not be read as regret rising or fading with age. On the other side, a Michigan State population study found that adults who reached their 70s without children reported no more life regret than parents — and in fact, parents were slightly more likely to say they would change something about their lives.

The cultural narrative overwhelmingly frames childlessness as something people will regret “when it’s too late.” The data does not support this. Pew’s 2024 survey found that only 38% of childless adults over 50 even report having once wanted children, and the MSU population-based data shows that this aspiration gap does not translate into elevated regret in old age. The asymmetry in public discourse (intense focus on childless regret, near-silence on parental regret) is itself a perception gap worth noting.

The caveat that matters most is voluntariness. Involuntarily childless adults — those who wanted children but could not have them due to fertility, circumstance, or timing — likely experience higher regret than the voluntarily childless. Most surveys combine both groups, which obscures the difference. Similarly, the parent-regret figure almost certainly underreports due to social desirability: saying you regret your children remains one of the strongest taboos in survey research.

出典: 行動

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

1/2 件の出典が引用元と一字一句一致することを独立して検証済み

  1. [1] YouGov UK — One in twelve parents say they regret having children
    One in twelve parents say they regret having children
    統計値
    8% of UK parents say they regret having children; only 4% say they would not have children again if given the choice
    抜粋
    “"One in twelve parents (8%) say they regret having children. When asked to imagine they could go back in time and make the decision again, only 4% say they would choose not to have children." ”
    出典データ
    2021-08-30
    アクセス日
    2026-04-25
    計算過程
    Direct survey response; 8% is the headline "regret" figure. The lower 4% "would choose differently" figure represents a stricter test. We use the 8% as the regret_rate since it maps directly to the question framing.
  2. [2] PLOS ONE / Konrad Piotrowski — How many parents regret having children and how it is linked to their personality and health: Two studies with national samples in Poland 検証済み
    How many parents regret having children and how it is linked to their personality and health: Two studies with national samples in Poland
    統計値
    13.6% of Polish parents aged 18-40 regret having children (Study 1); 10.7% of parents aged 18-30 (Study 2); regret comparable among women and men
    抜粋
    “"in the population of the Polish parents between the ages of 18 and 40, 13.6% of the parents claimed that if they could once again make the decision, they would choose a life without children. ... in the investigated sample, 10.7% of the emerging adult parents responded that, if they could make the decision once again, they would decide not to have children. ... The results of the Chi-square analysis show that the percentage of parents who regretted having a child was comparable among women and men." ”
    出典データ
    2021-07-22
    アクセス日
    2026-04-25
    検証
    グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
    計算過程
    Two Polish national samples: Study 1 (ages 18-40, 13.6% regret) and Study 2 (emerging adults 18-30, 10.7% regret). Both figures sit modestly above the YouGov 8% UK headline, providing cross-cultural corroboration in the same order of magnitude. The study found no significant gender difference in regret rates.

出典: 不作為

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

1/2 件の出典が引用元と一字一句一致することを独立して検証済み

  1. [1] Michigan State University / Watling Neal — Child-free adults don't experience more regret as they age 検証済み
    Child-free adults don't experience more regret as they age
    統計値
    No evidence that older child-free adults experience more life regret than older parents; parents were slightly more likely to want to change something
    抜粋
    “"We found no evidence that child-free older adults experienced any more life regret than older parents. In fact, older parents were slightly more likely to say they would want to change something about their life." ”
    出典データ
    2023-04-14
    アクセス日
    2026-04-25
    検証
    グラウンディング監査の際、抜粋を引用元から独立して再取得し、原文と一字一句一致することを確認しました。
    計算過程
    Population-based study of 1,000 Michigan adults. The finding is that childless adults do NOT show elevated regret — they match or slightly beat parents. We use 0.07 as a conservative estimate aligned with the parent-regret figure, reflecting parity.
  2. [2] Pew Research Center — The Experiences of U.S. Adults Who Don't Have Children
    The Experiences of U.S. Adults Who Don't Have Children

    See all 3 Likelier entries citing this source →

    統計値
    Among US adults 50+ without children, 38% say there was a time they wanted children; 32% say they never wanted them
    抜粋
    “"Among adults ages 50 and older who don't have children, 38% say there was a time when they wanted to have children. About three-in-ten (32%) say they never wanted children." ”
    出典データ
    2024-07-25
    アクセス日
    2026-04-25
    計算過程
    Pew does not directly measure "regret" but the 38% who once wanted children is a ceiling for even partial regret. Combined with the MSU finding of no elevated regret, the inaction rate appears comparable to the action rate.

注意事項

Comparing across populations (parents vs non-parents) introduces selection bias — people who chose to have children differ systematically from those who did not. Regret surveys also suffer from social desirability bias: admitting you regret your children is culturally taboo, likely suppressing the parent-regret figure. The MSU study measured general life regret, not child-specific regret. Voluntarily childless adults report lower regret than involuntarily childless adults, but most surveys combine both groups.

生データ: /api/decisions.json

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