Because it becomes "uncool" to like cartoons after a certain age. It's silly, really.
Not all hate cartoons, I don't like them not hate, but a lot of my friends like them. It is this thing that when you watch cartoons you are too young and when you watch tv show like house, NCIS, or two and a half men (and any other popular tv shows) you are cooler. But some cartoons like south park, family guy, and the simpsons are all cartoons that are "cool". So it depends on which ones your talking about. I hope this answers your questions.
political cartoons.
political Cartoons.
Political Cartoons-Apex
The younger age finds most things they newly discovered funny or entertaining. When you turn thirteen you start to go through puberty and the cartoons change and they aren't that interesting. But the cartoons you see as a child, and you see older after 13, you'll still love it. And not all cartoons are children cartoons. Some are for adults and teens. A lot of anime is for the older teens and they are cartoons, just from a different country. With me, I hate the new cartoon shows on cartoon network and nickelodeon. But I still like Pokemon and Spongebob. It's also sometimes you watch the shows so many times it gets boring. Also a newer show finished on nickelodeon. It's an anime style show called Avatar.
political cartoons
political Cartoons
Your pups don't turn into adults and you can't turn them into adults
kids turn in to adults when there 18. some people think it is when they turn 21 but, at 18 you can go to college and living on your own seems like your an adult.
apes turn into adults around the age of 10
They usually try to hurt you for no reason and they turn others against you.