first six seasons are absolute gold
7 and 8 are wacky, but still great
9 through 13 are watchable with massive flaws starting to show
14 through whenever 2010 started are insufferable liberal garbage
then we got like 6 watchable years where it wasn't... it wasn't simpsons, but it was entertaining? and had 6-10 good jokes per episode.
then it just plooped right down the toilet and they started openly engaging in racist hiring policies, so yeah stick to single digits mate. it is completely worth it.. it's not just nostalgia. it BUILT popculture. It's easily the seinfeld of animated sitcoms.