Modern cartoons are just different. Fairy odd parents is great, adventure time is great, hell, even phineas and ferb is awesome.
But for childhood... Finnish "Muumit" which tells about everyday life of nudist trolls who live in a valley.
Touche.. I do like Adventure time and Phineas and Ferb. But I feel like when ever I see a new cartoon it is just the same thing trying to be random and weird, nothing really new.
That's the problem with a lot of the newer shows I've noticed is the "shock value" of the show, even AT and RS are guilty of this at times, then again back in the 50's they could say and do things in cartoons that would get the SJW's angry today. I don't really watch many cartoons and I give everything a one or two ep trial (yes even MLP) until I decide whether or not I like it.
Also Steven Universe.