As a matter of fact..., i'm a third child and last child.
I'm also the son of a divorced couple.
Reason? My mom wanted to go back to college, regardless of the fact my dad made more than enough to support all of us. It was her dream to be a school teacher. Now she's remarried, an elementary teacher- but best of all happier than she ever would have been probably. This is great- i don't blame her for a minute. Sure, it had some costs for me, but now i believe (and truthfully always did) it's okay because my mother is happy.
Can't vouch all children would be the same- but it's interesting that our scenarios are similar to some extent. Maybe if you're lucky your first child will be happy with anything, your second will be a lawyer, and your third won't be a philosophical madman. hehe
Whatever happens, just do what you believe is right deep down. It's hard to go wrong with that.