To borrow an argument from vhemt.org, the biological pressure is to have sex, not to have babies: http://vhemt.org/biobreed.htm#instinct http://vhemt.org/biobr

To borrow an argument from vhemt.org, the biological pressure is to have sex, not to have babies: http://vhemt.org/biobreed.htm#instinct http://vhemt.org/biobreed.htm#instinct As for the second sentence, I would not be surprised if the social pressure works in different ways in different places. I am in Norway where social pressure is high: the state sponsors it, would-be grandparents will of course nag, and it seems harder to be recognized as a complete person in the media and by peers if you do not have a family.