It's difficult to persuade people to have fewer children, since the people alive today generally inherit the trait of wanting children. Further to that, I'm no

It's difficult to persuade people to have fewer children, since the people alive today generally inherit the trait of wanting children. Further to that, I'm not sure it's a good idea anyway in many cases if you're worried about sustainability of the human race and our current lives - if we all stopped having children, society would pretty much collapse. Who's going to look after us when we're old? Clearly we don't all need to have 12 children, but 0 won't work either.