Selfish reasons to want more humans
An essay arguing that a larger human population is inherently good — because it would produce more geniuses, innovation, and niche cultures — draws heavy pushback. Critics counter that we already fail to provide a dignified life for billions, are overshooting ecological limits, and waste existing talent through poverty, poor education, and inequitable systems. The exchange centers on whether technological progress and human ingenuity can sustainably outpace resource constraints, or whether prioritizing fewer people with better lives is the only realistic path.
Population growth vs. environmental limits
- Many argue Earth is already over carrying capacity: overuse of freshwater, soil depletion, overfishing, mass extinction, and climate change are cited as evidence.
- Others say resource “shortages” have historically been solved by substitution and technology, and that carrying capacity is a function of technology, not a fixed number.
- Skeptics counter that extrapolating past substitutions (oil vs. “whale oil”) ignores physical limits, exponential growth, and planetary boundaries; they view “growth can continue indefinitely” as unfounded techno-optimism.
Human welfare, inequality, and “wasted brains”
- A recurring theme: the world doesn’t lack people, it underdevelops and misallocates the people it has (poor education, poverty, conflict, authoritarianism, bullshit jobs).
- Some say the priority should be wealth redistribution, education, women’s empowerment, healthcare, and basic dignity for existing humans, not adding more people.
- Others respond that increasing both the number of people and the share who can develop their talents (“por que no los dos?”) could be complementary.
Innovation, geniuses, and diminishing returns
- Supporters of higher population emphasize more “outliers” (geniuses) and more minds for R&D and ambitious projects.
- Critics say:
- There’s no guarantee extra geniuses get opportunities; many will remain in slums or underemployment.
- We already underuse existing talent; marginal returns on more “raw humans” may be low.
- More people also means more harmful outliers (psychopaths, dangerous actors) in an age of powerful tech.
Urbanization, infrastructure, and quality of life
- Several note housing, transit, and utilities are already strained; population growth without governance reform mainly means higher rents and crowding.
- Others argue most cities are far from physically “full”; NIMBY politics and car-centric design, not population, are the binding constraints.
Ethics, values, and anthropocentrism
- Some reject an explicitly human-centric utilitarian framing, pointing to animal suffering (factory farms), ecosystem loss, and other species’ interests.
- Others embrace human-centrism and “liking nice things,” but disagree on the optimal population: suggestions range from sharp decline to stable 5–10B.
Demographics and policy levers
- Many expect global fertility to fall and population to peak/decline without coercion, driven by education and women’s empowerment.
- There is disagreement on whether population decline is a disaster (aging, shrinking labor force) or a needed correction.