My experience of The Hobbit was that the 24fps version felt like being in Middle Earth, and the 48fps felt like being on the film set - which strictly speaking was the more realistic experience, but far less satisfying.
There were similar outcries at the advents of colour movies and "talkies". Once people have watched a few HFR movies, I'm sure they'll get used to it and learn how to suspend their disbelief again.
But, I'll give it the benefit of the doubt for now - 3D was kinda crappy too at first, but some years later the movie makers have improved the technique to make it far less annoying. It's become more than just a gimmick now.