3D Conversions of movies shot in 2D

[Canada]

To me there is a disturbing trend in 3D now both Iron Man 3 and Star Trek into Darkness are both 3D conversions. 3 years after Avatar, directors should make up there minds whether they want to do a 3D film or not, the other side to that coin is the director wanted to make a 2D film but the studios wanted to make more money so they post converted the film to 3D. To me 3 years after Avatar we should only see new native 3D films, 3D conversions of older film or 2D films that's it!