Now, where do I start?
Well, it seems that in animation, adults are less important and respectable than before. For school settings, there are only less than three teachers and one principal. From what I recalled, Ouran High School Host Club had NO teachers whatsoever. It's like the students run the school(I'm not sure if Disney's Recess would count) and the adults(if there are any) are just in the sidlines.
Then, we have series(ANY form of media) where the fate of life itself rests in the hands of... children?! What kind of person would make children responsible for saving the world? On the same vein, why are some artifictal superpowered bio-weapons in the form of children/kids(majority and especially lolis)?! Some people must really have a child fetish.
I also hate when the children characters have little or no parents/guardians at all! They're either dead or missing. Having two TRUE full-fledge parents, Hell, a TRUE, FULL happy family is rare in Japanese fiction. Annother bit I hate is when an adult went through Hell to get to where he/she is now, yet he/she gets overshadowed by a child/kid who even show no true effort at all? So, experience means nothing?
Anothing is that adults tend to be useless, incopetent, insane, irresponsible idiots. Comedy Central's South Park is the worst offender, IMO.
I always thought the adults in Arthur were good. Mr. Nigen Ratburn knows where it's at, yet he can't operate a computer? When there not being idiots, the adults in King of the Hill are also good. Same goes for The Office, where EVERY character is an adult(considering where the setting is...)
And the new anime, Eden of the East, might give us hope for the adults. Hell, the main characters are adults(21 years of age).