I have the good fortune of being in an area with a great club; W4UCJ, Thomasville Amateur Radio Club. I imagine that Radio Clubs are like all other organizations; there are some that are more insular for whatever reason, good or bad, and there are some that are much more open. Our current roster shows 169 members, with probably two dozen being family members; over a period of time many of the family members have become licensed. We have an active outreach for youth in our area, with Youth Nets every week and Youth Activities at our Hamfest and for Field Day. We actively encourage our young people to participate in ARES; a high school student trapped in a school, after a tornado, with an HT will be able to save lives! I can think of a dozen members, off the top of my head, that are under 18, with many that are 12 or under! The range of member ages for adults is across the board, from college students to senior citizens.
We have members that will help you build an antenna, help you diagnose a radio problem, teach classes, be VE's, talk at your school, meet with public officials, or any other activity that promotes Amateur Radio.
All of this is happening in rural Southwest Georgia/North Florida!
I say all this, not so much to brag about our club, but to enforce the idea that there are friendly, family oriented, growing Amateur Radio Clubs out there; if you have not found the one that "fits" for you, keep looking!