YANBU Of all the only children I have as friends (7) only one says she was happy to be an only child. All the others wanted at least one sibling. My BIL is an only child and now he is solely responsible for an ageing mother and I know that (although he says he never really thought about it whilst growing up) he would dearly love to have someone now to share the load.
Be careful how you go about tackling the problem as I know from experience that conflict over this most basic of relationship dilemmas can lead to real heartache.
I wanted a whole football team and at first DH said he wanted the same.
After we had two he then said he didn't want any more. DD2 was an "accident" due to lack of control (wine was involved) and he very nearly left me over it. It was in no way deliberate on my part btw.
I had had 2 cs's already, so had to have another, and my original ob had advised me not to have more than three (sections that is). However, had DD2 in a different hospital under different consultant who said she was happy to perform up to five.
I had a real yearning for more but DH put his foot down and went for the snip at a private clinic (NHS wouldn't do it without my consent). Perhaps if I hadn't nagged him so much this wouldn't have happened(see 12lbnaturally).
When I found out what he had done I am ashamed to say I was so enraged that I gave him no sympathy for his pain whatsoever and went into a deep depression.
It really killed our relationship stone dead as I never recovered my libido and sex is now such a chore (and I'm a hopeless actress) and has now ceased because a) I hate it and b) DH says he can't enjoy it if I don't (makes him feel guilty).