Male.
I want to have kids (well not me, but my wife, that is when I get married) because I come from a big family and I love raising children, I did a great job on my little brother.
I don't see a decline in birth rates as a good thing. What happens if it continues? Environmental catastrophes can only go away if more people come up with ideas to prevent them.
Some believe (not me) that global warming is all down to what would have happened anyway without human intervention. I believe that oil companies are preventing technologies in assisting the environmental issue.