Yes, it was a consideration of ours. The planet can only carry so many humans. I guess this is on my mind more than most because I work with wildlife, but I just see it as a reality of living within a finite ecosystem. For what it is worth, no I am not enforcing population control on other people, and yes we do try to reduce our ecological footprint in other ways, including small fuel-efficient car, insulation, solar power, compost toilet, water tanks, vege patch etc. It is one part of the whole picture and I think it is really still a taboo subject for a lot of people.