What's your definition of "worth it"?

As a paying member of Clan Stewart Society of America, I get a four page pamphlet every 6 months or so telling me what great things are happening in the association. That's it.

My fiancee's Gunn membership gets her the same kind of pamphlet, but also invitations to bbq's, phone calls, e-mails... Basically, the minute she introduced herself, she became a member of a very large family.

It all depends on the association, who's running it, and what your motivation is. If you want to be a member to get perks, check them out. If you want to help fund preservation of your Clan history, pay up and see what happens.