I like 48fps only along wirth 3D. And not every movie benefit of it.
I know it's not exactly the same quality than true 48fps but the motionflow effect on my HDTV (creating fake pictures to make the motion "more smooth") is really something that I a usualy despite. But when it comes to certain movies in 3D (The Hobbit, Avatar, Prometheus) I use it cause think it makes the 3D way better looking. But the same movies in their 2D versions looks just wrong with the motionflow. And there are certain 3D movies that don't benefit of the motionflow. Like Dredd for example. I tried to look at it this way and it just felt like a cheap direct to DVD. Certain other movies need to use it at minimum effect. I can't really point what makes it work or not for me though.