This is, of course, from a pro-life Catholic organization. I get the idea that most of our forbears, had they been asked what, if anything, is wrong with homosexuality, would raise fears of underpopulation. Even ancient societies with relatively pro-gay attitudes, such as the ancient Greeks, would not consider gay marriage because gay relationships could never replace the population maintenance role played by heterosexual marriages.
Mosher: Like other baby boomers, I lived through the unprecedented doubling of the global population in the second half of the 20th century. Never before in human history had our numbers increased so far, so fast: from three billion in 1960 to six billion in 2000. But the population alarmists, I came to see, glossed over the underlying reason: Our numbers didn’t double because we suddenly started breeding like rabbits. They doubled because we stopped dying like flies. Fertility was falling throughout this period, from an average of six children per woman in 1960 to only 2.6 by 2005.
Still, there seems to be little concern about population maintenance.