Any advanced society should be able to acknowledge that population growth must not outpace the available resources. Or else there will be Bad Times For All
Yeah, having kids probably reduced my household resource consumption, compared to the dual income no kid lifestyle that my wife and I had before kids.
Population growth is so far disconnected from resource consumption, because people's resource consumption does not resemble a bell curve. A private jet produces more CO2 in an hour (about 2 tonnes) than the average Indian produces in a year (about 1.9 tonnes).
The poor people having children aren't destroying the planet. Rich people, childless or not, are. (And yes, I acknowledge that I fall under the "rich" category here.)
I think my personal resource consumption, if scaled up to the world population, would be devastating. That's what I mean by categorizing myself in the "rich." I might not be a billionaire, but I'm far, far above the global average, and still significantly above the national average for my nation.