I don't see what's wrong with hating a show. It's the same with hating certain foods you don't like. The very sight of it can make you nauseous, and want to vomit.
Certain anime can trigger the same response.
Sure I can avoid it, but whatever little contact I have with it feels icky and unclean. Of course, if you hate a show and keep watching it, then you're just a masochist.