Well 3D TV was a bust because the 3D sucks. Nobody wants to wear the glasses because it isn't worth it. Picture isn't good enough.
The thing about it is, 3D TV and even other virtual reality like the CAVE or Oculus Rift are passive, visualization only.
If you could have 3D objects not just in front of you, but all around you,
and then actually create 3D objects and manipulate them in real time,
I think I'd put some glasses on for that.