Earlier this year, my brother and I had to clean our rooms and I found my binder and box full of cards... They're all from the 90's though. But we made new decks, and actually played according to the rules since we could understand them now that we're older. XD I know I'm only 18, and my brother is 20, but it was sweet nostalgia...
Trading card games are generally considered geeky, but I don't think that's a big deal. I enjoy "geeking out," actually. So hey, if you like playing Pokemon cards, why not play it? Be comfortable with what you like, man.