My DH and I are kind of the other way around on this. He was the one who thought stronger about adoption at first. We knew that it could be a really long and difficult process for me to get pregnant because of my PCOS and that I could be quite ill during the pregnancy (I suffer from hormone induced migraines, dermatitis, etc.) and so he was very concerned about my health and the health of our child if we pursued bio kids.
I waffled a bit, but now I think I am the one who is a bit more gung ho (he is totally excited, I just harass the workers more) and after a recent ectopic pregnancy scare, we feel even more strongly (is that proper english?!) about our decision.

Carrie