There is a huge push to have 2500 theater screens setup for digital projection in the next 3 years for the release of several major 3D movies, including Cameron's Avatar and something Lucas has in the works.
There are several "computer" LCD monitors out already that allow 3D without glasses but you have to be in the perfect seating position or it does not work.
Secondly the polarized glasses you have to wear for 3D should not give you a headache unless the 3d implementation is poor.
Disneyworld has 4-5 3D movies that are absolutely insane. If they are any indicator of the future it sure looks bright.
As far as home setups?
We don't even have 1080p sets mass market. Figure another 10 years on home 3D being ok and affordable.