as human beings I think we all want to be pretty, because we all want to believe that other people are attracted to us. First impressions are, after all, visual ones, so if one is less attractive then it stands to reason that one might not make the same kind of visual first impression as someone who is very attractive.
But at the end of the day, we can't change the person we are on the outside, (we can lose weight/have a new hair style etc, but features will remain), we can only work on being a good person on the inside.
I am not pretty. Not at all. In fact I would go so far as to say that I am probably quite ugly. Obviously I don't actually know this as I have never actually seen myself (although there are definite advantages to not being able to look at yourself in the mirror first thing in the morning ), but from what others have said I am fairly sure that I would class as the ugly parent with the beautiful child.
When I was younger it did bother me.
Now that I'm older I think that there's no point being driven by things you cannot change.