I have 3 children and I can't say that I would actually want to carry and birth a child. My wife had very difficult pregnancies and births so maybe that spoiled me on the idea. I know it's the miracle of life and some women really connect and love being pregnant, but some don't. I'd probably fall into the "don't" category, lol. But then again, maybe I wouldn't.
If it was possible, I'd probably have to do it just to see what it's really like :D