Same here.
I had WFF N' PROOF, along with one or two of thier other games as a kid, and was fascinated by them but I couldn't find anyone to pkay them with. We were into 1st edition D&D and wargames, but no one else was into logic or puzzle games. It's one of those odd regrets that I didn't play more.
I got a few friends into Penté, though. So that was kind of a win.
I did play WFF N' PROOF, and it was instructive.