Low birthrates are mostly discussed in the context of worker shortages rather than as the existential threat they represent to societies, cultures, wealth, and ways of life.

More optimistic projections base South Korea's economic peak as late as 2050, but these are built on UN medium demographic scenarios with no current evidence supporting them.

South Korea spends less on family benefits than most other rich countries, reducing government support for childbearing relative to other developed nations.

Science, technology, and innovation breakthroughs are typically made by young adults and middle-aged people; significantly fewer young workers means far less innovation and contribution to societal wealth.

Starting a family or not is a personal decision, and most South Koreans are rationally deciding against it given the systemic barriers.

South Korea's fertility rate in 2023 was 0.72 children per woman, the lowest ever recorded in history, with Seoul even lower at 0.55.

Even if productivity per worker grows at the same rate or faster than in recent decades, South Korea's GDP could peak in the 2040s, entering permanent economic recession.

The demographic crisis is effectively irreversible because even if South Korea's fertility magically tripled to replacement rate (2.1) immediately, by 2060 there would still be an inverted population pyramid and less than 1.5 workers per senior.

South Korea has an unavoidable bottleneck in the 2040s-2050s; however, in the long term, recovery is theoretically possible if South Korea enacts rapid societal changes that make reproduction attractive again.

Demographic collapse is not limited to South Korea; in 2023, China had a fertility rate of 1, Italy and Spain 1.2, Germany 1.4, and the UK and US both 1.6, with fertility rates still falling globally with no sign of stabilization or recovery.

In 2000, there were 17.5 million South Koreans aged 25-45 comprising 37% of the population; this generation created K-pop, K-drama, and K-food trends. By 2060, only 5.6 million will be in this age group, comprising 16% of the population.

To maintain a stable population, a society needs a fertility rate of approximately 2.1 children per woman, known as replacement level.

In the 1950s South Koreans averaged 6 children per woman; by the 1980s the rate fell below 2; a decline of more than 66% in three decades.

If fertility remains at 0.72, then within four generations, 100 South Koreans will produce only 5 descendants: 100 → 36 → 13 → 5.

In South Korea's current population pyramid, there is only one 1-year-old for every four 50-year-olds.

After four decades of below-replacement fertility, South Korea's total population remains at an all-time high because it takes decades for demographic momentum to produce visible population decline.

The size of an economy is fundamentally linked to the size of its workforce—a large economy requires many workers to produce goods and many consumers to buy them; South Korea's workforce will shrink below half, from 37 million to less than 17 million by 2060.

Out of all developed countries, South Korean men do the least amount of housework and childcare within their families, leaving women with disproportionate unpaid work if they want to keep their jobs after pregnancy.

By 2060, South Korea's population will shrink by 30%, with 16 million people disappearing in 35 years, making it the oldest country in human history where one in two people will be over 65.

In 2060, less than 1 in 10 South Koreans will be under 25, and only 1 in 100 will be small children.