Is it bad for a not so pretty girl to have a lot of confidence, thinks she is gorgeous and gets a lot of boyfriends, but then a really cute girl gets none, has low self-esteem because guys either tell her she is ugly or they tease her as a friend and she falls for them, but they don't like her?
Hell no, don't let anyone take your confidence. Confidence is attractive. It gets people interested on why they so confidant, what's so good about them. Well the pretty girl sounds like she needs to educate herself on how good she is. I would go to a book store and go to the self help section and there is some awesome titles. Usually low self esteem is caused because of lack of understanding other people and their self. Good?
Confidence definitely matters. Girls who have low self esteem usually end up with guys who take advantage of them or mistreat them. Every girl can be pretty, don't be so hard on yourself. Walk around with your head up high like you are the shit and eventually you'll attract some good guys
Confidence can make or break someone. I've known girls that I thought were completely unattractive that walked around with confidence that even the gorgeous girls don't seem to have, and it just made them. It made other people, myself included, start thinking they were really gorgeous. But of course, you have to be careful not to be TOO confident. Being cocky has the opposite affect, you become an ugly person, regardless of how you look if you're cocky.
If a pretty girl has none, well I don't know, if I were a guy, I'd be wondering why I should like her if she can't like herself.