If my circumstances are favourable to make it happen, I want at least 2-3 children of my own. However, I'm still young and that prospect may be far off.
I can totally understand why some people would skip the whole family-life thing. Looking at my brother struggling with it, it's not easy to be a family man and dedicate yourself to work at the same time.
However, I do believe wanting babies is more than just a primal urge. I mean, logically we need 2.1 babies/woman or we perish, that's just simple mathematics. If everybody suddenly says "well, they're too much of a liability" and don't make babies, well eventually there would be no one left to enjoy a career oriented, child free life, would there?
So I guess I'm saying I believe in individual choice, but also in our continued existence (not that the extinction of Homo Sapiens is imminent or anything).