I haven't joined any jams for some of the reasons that have been shared here. Plus, I don't know of any local dulcimer groups. If there are any, they have a secret password or something. A couple places in my area have Irish sessions and there's an old time group, but I need to just go listen and see what I think. My husband took up banjo (but put it down about a year ago due to schedule overload) and I've thought it would be fun to try to play together. He hasn't had the same enthusiasm. Playing a musical instrument is something he never, ever did until he took it up about five years ago, so he just doesn't feel comfortable with the notion.
I'm sorry to hear Thanna ran into that kind of attitude. When I had my short lived time with the gospel group at church, they were sort of that way, too. In fact, though I was "the answer to a prayer," somehow I wasn't informed of the practice schedule after our break. I actually confronted the group leader on that, telling her I was okay with that, but had I been a new member of the congregation, that would have been very uncool. She apologized but I think she had her own agenda the whole time. People are funny, aren't they?