Personally I've found some of the remakes of some decent films, truly awful - not because I'm over-sentimental about the originals, or have the on some pedestal, just that some very decent, iconic films have been debased, somewhat, by some thoroughly mediocre, or in some cases truly poor fiilms made as remakes.
There's not many films I can recall watching that I thought were truly awful - I tend to avoid anything unless I feel I'd truly enjoy it. But there's been several films I've seen that get well rated by plenty of people, that I thought were very ordinary, if that - Avatar, for example - plenty of hollywood cliches, and a very ordinary script and story, overhyped by intrusive CGI and 3D effects. I didn't hate it, I just thought it was very average, perhaps a bit of a poor story, really, only people seem to go batshit crazy over it, I can only think because of the visuals, because there's nothing great, unique, remotely interesting, or anything other than mediocre about the story or acting.