I joined the boards for the same reason.
I don't have anyone in my life that is passionate about this stuff--a few friends and relatives that enjoy the CB based movies but that's about it. They all know of my obsession with Spidey and I've talked to them and educated them on all sorts of topics and for the most part they're all supportive, especially my wife. She's awesome. Even though she really has no interest in CB stuff, she sits and listens to all my ranting and has watched most stuff with me--even TSSM. She enjoyed that one quite a bit. I also still get jokes from friends/family now and again and most of my Xmas gifts end up being something Spider-Man, which is cool. I got some great shot glasses with Romita Sr drawn Spidey poses last year. And on my birthday last year, a group of guys at my work pitched in and got me a Spider-Man themed poker set complete with chips and cards, of course.
So, I guess it's cool to have people that support your passion but it's another thing entirely to have people share the same passion.