Warning: Kinda Long
I'd be interested to know how many siblings you have and whether or not that makes a difference in how many children you want to have.
For instance, I have two younger brothers - the middle is only 2 years younger than I and the youngest is 7 years younger. Our parents were divorced when the youngest was born (literally, we moved out 2 wks after he was born) so my family has thus become quite an interesting study in family dynamics. I think we kids are pretty typical in some ways but atypical in others - as the oldest (and only girl), I was over-protected and therefore did well in school and sports, went to college, etc. The middle was pretty much ignored, barely graduated high school, joined the military, dropped out, tried to go to take courses online, dropped out, and now has a child with his girlfriend. The youngest was doted on by everyone and now pretty much expects life to be easy. He probably had the greatest potential, but had a hard time graduating high school and lives at home.
Anyway, I'm sure the difference in ages and my parents' divorce compounded everything, but because our relationships as young children were so dis-jointed, I've decided that two kids, 2-3 years apart is best for us. Not to mention the cost of college in 18-20 years! I should also add that DH is nearing 50 so we have some concerns about future health issues (with the kids) if he waits too long.

Anyone else?