"Unlike the pronatalists, who want to solve depopulation problems by bringing in entire new demographic cohorts of people, who are likely to have radically different values from us, on a mass scale, I'd rather we preserve our culture and focus on keeping alive and healthy the people we already have."

underlying assumption here is that there is no globally shared value among all ppl from different demography...which I tend to disagree. Ppl of same social-economy class regardless of demography shares more common values than ppl from different social-economy class but same demography.