Actually, 3D is here to stay, ever since Avatar, people have been ape shit over 3D.
It died years ago, and it will die again, or not.
Technology is funny that way.
The only way that I will ever watch and enjoy a 3D movie is if
A.) I don't have to wear those stupid ass 3d glasses.
B.) Is actually 3D and not 2.5D
C.) It isn't used for stupid gimmicky pointless effects just to haul in a few extra bucks to say "HEY THIS MOVIE'S 3D"