MENSA begged me to join them, begged me! I told them clubs weren't my thing, I'm an introvert, but they assured me their club was full of special smart introverts and there was chess and you could bring it up on the internet and people would respect you.
The ex-wife was into all that MENSA stuff. I didn't see what the point of it was.
Of the local Mensans I've met over the years through her social circles, we had very little to nothing in common to talk about. The ultra geeky/nerdy stuff I was into, they had no clue what it was all about.