In my opinion, the old generation of cartoons is dying out considering they actually made sense and the episodes are kind of things that you could relate to. (I guess is how you can put it )
Now pretty much every cartoon I see around is just completely random and completely confusing.
I'm not a fan of most of the ones these days, like Adventure time or Regular show... they're just so UGH.
I do like amazing World of Gumball and the New Looney Tunes show though.
But classics like the Powerpuff girls, Totally Spies, Code Lyoko and Courage the Cowardly dog were awesome!
Not sure if this counts, but Teen Titans and Avatar: The Last Airebender were some of my favorite 2000 shows.
Legend of Korra is good too, but I don't know if that counts... it's like in a league of it's own.
No kidding, that show is just absolutely disturbing no matter as what age. I'm actually horrified reminding myself the fact that it's a kids show, I'm pretty sure it still shows that show on NickToons a tiny bit.