3D was not a real selling point when I purchased my TV. I have enjoyed the 3D shows and blu-rays that I have seen, but I probably watch one 3D show per month, partly because the selection is not so great, and partly because dealing with the glasses is such a pain.
I also bought a TV that has 3D, but 3D was not the reason I bought it. Most new high end Plasma TVs are only available with 3D, which makes sense because it does not cost any more to make a plasma TV 3D compatible. LED TVs are a different story.
Personally, I do not mind the glasses, but I agree that other than a few movies, sporting events, and travelogue type documentaries, there is not much that I care to watch in 3D.
I doubt that glassesless 3D on a screen larger than a smartphone will be feasible in the near future. Even if it was, there will be little content worth the expense of producing in a format that can be shown on glassesless 3D.