I used to, like 15 years ago. Just kinda grew out of it. I'm not saying it's a kiddie hobby, because frankly I wish I was still into it, I just don't have time or enough interest anymore. What remains of my collection is mostly X-Force, X-Men, Deadpool, Spiderman, other 90s Marvel series, very few DC comics, and handful of my favorite comic cards (lots of Marvel Masterpiece cards). I gave boxes of this stuff away a decade ago.