I thought this was an unpopular opinion, but reading through here it seems it isn't! But yeah I didn't like SAO. I think if it was darker and focused on the fact there were trapped (like what happens to their bodies, why did some of them just settle in to their life in the game and not seem to care about never going back to their families etc etc) then it would have got my attention more. Though I have to say it is a good few years since I watched it, and I only watched season 1 so they may have gone more into this I dunno...
I don't like long running shonen shows, such as Naruto, as I find it far to repetitive.
I dunno how unpopular this opinion is, it may be very popular, but I dislike the sexualisation of school age characters. (Yes I really hated Kill La Kill and gave up after about 4 episodes )