Do not worry! I'm 16 and some of my favouritest things in the world are Winnie the Pooh, and Disney cartoons. I love watching Cartoon Network. You have right idea :p If you're enjoying yourself, why stop? Besides, people make such a big deal of acting "grown up" and "mature", but when they hit 30, they whinge endlessly about their lost youth and wish they'd done all the things they haven't. Don't have any regrets, I say, and do what you wanna do.
*So long as it's within the law not murder or rape etc etc ^__^