I enjoy things I used to like as a kid even more as an adult, mostly because I can now enjoy them on a different level, even if that level is just realising how unintentionally hilarious it is and having a laugh at how bad it is. But, yeah, I enjoy plenty of things from my childhood without shame or irony. I'm not one of those people who thinks everything was better when I was a kid or anything, but it's just something I really like doing, I guess because I can appreciate the familiar, or just because I get a memory of it and suddenly get an urge to reacquaint myself with it. Hell, I've even gone back to things I didn't like as a kid and realised they're better than I thought they were at that age.
I'm a huge nostalgia geek and I'm really just a big kid at heart, and I'm happy that way. I guess it's because I didn't really get to enjoy being a kid when I was a teenager in high school, so I'm making up for it now as a twenty year old in college.
It's funny. You spend all your teenage years being super serious and trying to be an adult, and then you spend your adulthood being super goofy and acting like a teenager.