Earlier quoted context omitted.
Relatively few people's economic output can compare with them producing new people. If your last name is not Feynman or Curie your most valuable contribution to the society is a couple of kids.
Counterpoint - the best single thing you can do for the planet, in terms of minimising your consumption / ecological footprint, is to not spawn.
Also, have fun not having anyone to take care about you when you grow old. And your retirement won't be worth shit either without a new generation to keep the economy going.
Yeah no thanks, fuck your anti-natalism. You might as well remove your own ecological footprint if you would deny your children's their existence for that reason.