I've said it before, but really my problem with animation (or really, many shows today) is that there just really isn't any meeting of the minds anymore. Sure, many cartoons of the 90s were just as absurd as many cartoons today are, but back then, cartoons had something for everybody, and as mentioned in another thread, there was plenty to keep the kids entertained, but there was also a lot of humor and wordplay for adults that went over the kids heads. Nowadays, it's like cartoons are split into two categories: kids only and adults only. Kids cartoons seem rather watered down, silly (in a bad way), fluffy, and conducive to brain-cell dampening; adult cartoons seem to always forego storytelling and character development and just go purely for shock value and what they can get away with as far as content goes (seriously, TBS has been promoting the heck out of AMERICAN DAD! simply for the "edgier" content, though I don't know how much edgier Seth MacFarlane's work can get).
That, and just because of my plain insanity, I begrudge CN for merchandising the heck out of their cartoons since KND (with PPG and Dexter being the only exceptions to the rule), when prior to that, we were lucky if a CN series got even a fast-food deal . . . when Taco Bell and Hardee''s came out with COW AND CHICKEN toys, and Subway came out with toys for SHEEP IN THE BIG CITY, COURAGE THE COWARDLY DOG, and ED, EDD N EDDY, I snatched them up lemme tell ya (and I don't even like Hardee's or Subway's food)!