I'm one of the minority who sees the value of a 3D capable TV. I prefer to watch any movie this way and am all about the home theater experience. Granted there are some great passive 3D UHD TVs out there, but there has yet to be a 4K 3D standard. I fear if I jump in now, Ill end up using my PC to convert any new 3D content to the current standard. (which with Passive tech, it would be possible for 4K 60fps 3D at half resolution). I just prefer that the next standard for 3D, (something that likely includes support for HFR 3D for films like the Hobbit and upcoming Avatar sequels) be included in the next TV I get.
Furthermore, with the exception of netflix, I will have very little 4K content. Plus, as an AMD fan, I gotta wait until Vega 10 at least to upgrade the video hardware to drive a 4K screen for gaming properly.