South Korea has one of the highest life expectancies in the world, yet its young people rank near the bottom of the OECD for life satisfaction — a paradox decades of rapid development have made impossible to ignore

South Korea buries fewer of its people early than almost any country on earth. A child born there in 2023 could expect to live 83.5 years, among the highest figures in the OECD and within a year of top-ranked Switzerland, according to the OECD Health Statistics 2025 figures reported by the Korea Times. In 1970, near the start of the national series, that number was 62.3. The gain of roughly two decades of life in two generations is one of the fastest such shifts anywhere.

The same country’s young people report some of the lowest life satisfaction in the developed world. Koreans aged 15 to 29 rated their lives at an average of 6.5 out of 10 across 2021 to 2023, placing 31st of 38 OECD members, according to the National Statistical Research Institute’s Youth Quality of Life report, published in December 2025. A society that became very good at keeping people alive has not, by its own measurement, become good at making the first decades of that life feel worth having.

These are population-level figures from several official reports and international comparisons, not a single study, and the two numbers at the centre of the paradox are not the same kind of thing.

The two numbers do not measure the same thing

Life expectancy is close to a hard count. It sorts deaths by age and produces an estimate no one has to feel their way toward. Medicine, diet, sanitation, road safety and industrial policy move it, and Korea moved all of them fast.

Life satisfaction is a different instrument.

It asks people to rate their own lives on a scale, and the answer carries whatever the person brings to the question, including how their culture has taught them to answer it. In cross-country wellbeing comparisons, East Asian respondents tend to avoid the top of a rating scale where many Northern Europeans reach for it. Statistics Korea’s own Quality of Life Indicators report, covered by the Korea Herald, put the whole-population score at 6.06 for 2021 to 2023, near the bottom of the OECD and well behind Finland, which led that whole-population ranking at 7.74. Some of the distance is a matter of how people mark a form rather than how they feel, and a survey average was never going to read a nation’s inner weather.

The modesty explanation has a ceiling, though. If the low scores were only a quirk of how Koreans fill in a form, they would not line up with harder indicators, and they do. Korea still records the highest suicide rate in the OECD, 23.2 deaths per 100,000 in 2022 against an OECD average of 10.7, a figure that has fallen from 30.3 in 2012 but remains more than double the group norm. A UNICEF Innocenti comparison of rich countries, released in May 2025, ranked Korean children first tier for academic skills and near the bottom, 34th of 36, for mental wellbeing. When a self-reported score, a mortality count and an international child study point the same way, the gap is not a rounding artefact.

The system behind both results

What we keep coming back to is that the long life and the low youth satisfaction share a cause. Both are products of one machine, built for achievement and run at speed.

The clearest place to see it is education. Korean households spent 29.2 trillion won, about 20 billion US dollars, on private tutoring in 2024, a record for the fourth year running and up around 60 per cent over the decade, according to Statistics Korea data reported by the Korea Times. Spending rose 7.7 per cent even as the student population fell 1.5 per cent, and the participation rate reached 80 per cent. The customer base is shrinking, yet the market intensifies, concentrating on fewer children who each carry more of it.

The end of that pipeline is the Suneung, the single university entrance exam that still shapes much of a young person’s prospects, and the years of after-school academies that feed it. The same discipline and long-horizon effort that let the country build hospitals, semiconductors and a public health system that adds years to a life also organise childhood into a tournament. Add working hours that have long ranked near the top of the OECD, housing costs in Seoul that have outrun young wages, and a dense culture of comparison, and the shape of the data stops being a puzzle.

The country optimised hard for outcomes it could count.

Length of life is one of them. Whether a teenager feels the years ahead justify the effort is harder to count, and it drew less attention.

What the paradox does not show

It does not show that development was a mistake. The generation that built the growth is also the generation now living into its eighties in reasonable health, and few would trade that for the poverty that came before.

Nor does the paradox prove that money cannot buy happiness, the line it most invites. The Korean case is narrower. It is about one growth model, tuned for a particular kind of success, arriving faster than the culture around it could revise its sense of an ordinary life. The youth burnout rate, 32.2 per cent reporting mental and physical exhaustion in the 2025 report, reflects pace and pressure, not evidence that prosperity fails everyone everywhere.

The scores also stop short of ranking Korean young people the saddest in the world in any literal sense. Rankings move with the age bracket, the year and the scale used. The defensible claim is a modest one, and it holds up: on repeated official measurement, a country near the top of the world for longevity sits close to the OECD floor for how its young people rate their lives, and the same history links the two.

For anyone who recognises that pressure in their own life rather than in a chart, a national ranking is the wrong tool. Something close and human, a doctor, a counsellor, a person you trust, will help where a number cannot.

The figure to watch is not life expectancy, which will keep climbing slowly, but whether the satisfaction score moves when the pressures behind it do. If policy on private education, working hours or housing shifts and the youth number holds flat, the problem was never really about any single lever. If it moves, the machine can be retuned. For now the spending keeps breaking records while the satisfaction stays put.