I have one child. A son - grown and gone. It took us 8 years to decide we even wanted children and then thought "just" one was fine.
It didn't appear to be fine with everyone else, though. It seemed that I was still nursing my son when people started asking me, "so when are you going to have another one?" That didn't stop for quite a while. When I responded that this was probably going to be it for us I got "oh, no, don't do that to him?" Really? Is it so horrid to be an "only" child?
As the years went by and I'd meet someone new the ice breakers were always "Are you married? Where do you live? Do you have children?" After my response, I'd get the sad face with "Just one, huh?"
There isn't some kind of unwritten law that I don't know about that says you have to have more than one or any at all - is there?
I remember talking to a woman several years ago about this very topic. She had one child and was desperately trying to get pregnant with her second. Desperately. She said is was extremely frustrating to be asked that question like it was anybody's business.
I have a young friend who has a less-than 3 yr old and a new set of twins. I would have had to take up residence in a rubber room. She's the gal that can handle it, though. I know myself well enough to know that it was good that I stopped after one.
Only child. I don't ever say that. Just one. Nope. I have one - no need for further explanation.
BTW - I don't have the skills (apparently) to change the posting time. No, I'm not up and posting at 5a!