3D is gonna stay. Next year the new 3D TVs are gonna come out for which you don't need those crazy expensive glasses for anymore. Sports in 3D etc.!
I'm not a fan of 3D though, I also don't need the best sound system etc....I don't really care about those things. Bugs the shit outta a friend of mine who has the best of everything - projector, sound system, screen, TV, etc.!