
Seriously, if you don't like something, avoid it and let those who do enjoy it for as long as possible.
Now watching Pokemon. Lengthy and people hate it, but others like it, so I'm glad it's still on despite seizures, earthquakes, blackfaces and other offensive stuff, and thanks to the games introducing new stuff, it's still fresh. (I'm looking for the subbed uncensored japanese episodes by the way, if anyone can help... I only have 1-35 and 38, along with other banned ones)
I don't pick sides on fillers. On one hand you have Endless Eight and the 5 minutes on Namekusei (and pretty much every DBZ fight), but on the other hand you may have stuff that lets you know more about the mythology and the characters. I see people hating the Naruto fillers all the time, but I've read the manga and felt the childhood era was way too short and underdeveloped, so I actually look forward to the fillers when I do watch the anime, to get more of what I like. The side I pick will depend on what kind of filler it is, if it's something to elaborate more on the story or just some stupid thing to cut costs and avoid reaching the manga's story (even though it can be made nicely like what they did on Saint Seiya with the Ghost Saints and then Asgard, which is actually better than the original story. If you can't do it, then do like Bleach and halt the anime until the manga/script is further ahead).