yakk: good point. actually, bf skinner argued the same thing in his utopian book Walden Two. He suggested that the best way to spread the word about his wonderful utopian society that he created was to have everyone living in it produce as many babies as possible. That way they would overwhelm with numbers. Some might argue that the success of Catholocism is due partly to their anti-birth control stance, which produces larger number of catholic babies.
On the other hand, you can take a modified hindu look at the situation--having babies is like reincarnating yourself into a new life. by not having babies, you remove yourself from the cycle of suffering and reach nirvana
