I have a friend, same age as me (26) who has made the decision that she doesn't want kids. Which is all well and good, its up to her.
Anyway, during a discussion the other night between us and another (childless male) friend about drinking during pregnancy (v. dodgy ground I now know), I commented that unless you have been pregnant you don't have the same understanding of how the advice given can be confusing and overwhelming. She went a bit ott at that IMO, saying that she is fed up of people telling her that her opinions are not valid just because she doesn't have kids. It turned into a bit of an arguement then, with me saying that I didn't think that at all and her insisting that I must do.
People who do not have children have the same ability to care for them, teach them, love them etc, but as with any major life experience you need to have it for yourself to have a full understanding of it - or don't you?
She has a tendency to think she is right about everything and is very touchy and easily offended. I also suspect that her defensiveness about this (its not the first time she has said this sort of thing) may mean that she is not sure about her own decisions. So AIBU to think she is just being a bit of a stroppy moo?