My college girlfriends will tell you, that I always said I wanted 10 kids. Yes, 10. Granted, getting a later start on marriage, dealing with infertility, I think 10 is most definitely NOT in my future. Matt and I did pare down the 10 to just 4 when we were first married, but, given the same above circumstances, unless I have some multiples, 4 probably won't happen either.
The dilemma: when you have one absolutely perfect child, how do you take the plunge to add another. What are the chances that kid number 2 will be as equally good of a child? My reasoning, chances aren't good and we are treading on thin ice. Our number 2 would likely be a wild child, rocking the peaceful little boat we are so happily floating on. But, we do have that desire for more children.
I guess you just have to take the plunge.