I really don't know why people hate anime. Just about all my friends, including myself, watch it. We love to watch it together, especially Sword Art Online and Kill la Kill. I've never came across anybody who gives us hate or anything, so I've never actually known anyone who 'hates it' just some people who dislike it.
Maybe some people don't understand it, or don't like subtitles, or maybe just don't like the style in general.
Or maybe its what come with it...all the fandoms and such. Or the other stuff I'm not going to mention, this being public and all...
I really don't know. Just know you love it, and thats all that matters. If they don't like it, its not your problem, because your not the one who is missing out.
Stay Anime, My Friend