you find this notion in many poples posts, and elsewhere on the internet - that us people with 2+ kids (which i shall be come august ATBW)
i think it is rubbish but not trolling.
there is a formal 'stop at 2' campaign - i think it needs answering.
first, for me to have three kids in my house is better value energy per person than me having one child (the house takes the same to heat and light regardless of numbers) - i think in general, if you want to gt snotty about unnecessary over-consumption, look at consumption per person (which is increasing exponentially almost) rather than the numebr of people...
second, as others point out, every nation, as it gets richer, experiences a fall in birth rate - the uk is at 1.8 which is not sufficient to repace the adult population -
third - it is nice to have a large family, and as a child, to be a part of one. I loved it. I am not about to make important personal decisions that have a massive impact on my life due to the tiny, negligible planetary impact it may or may not have.