Definitely don't give up -- maybe you could start a group of your own!
As M.Elizabeth said, some people are just obnoxious in general. Maybe some others think you'll get bored and stop soon because when they were you age, they would have. Maybe they just don't think they have anything in common with you. And then we're back to obnoxious.
Keep looking for the right group, or create one yourself. I bet you aren't the only person in your area to feel this way!