Why do modern cartoons suck so much? [my very first nostalgic rant]

[Lurker]

Because you're no longer a child and thus don't find television shows aimed at children engaging?

Maybe... As I said, today I can still rewatch some cartoons from that time period and be genuinely interested (sure, the childish aspects sometimes bother me, but not that much). I think that "aimed at children" meant a different thing at that time than it does today.

I think the key word here is rewatch. As you've already seen and liked these shows in your childhood, you're predisposed to like them when viewing them now. If you watched the cartoons for the first time as an adult, I doubt you'd have the same reaction.