Well I still play flat games, FPSes and whatnot, but there are games that once you try in VR, you don't come back to 2d. Elite is one such game. DCS is another. Project Cars. Dirt Rally. Basically any sim supporting VR. But non-sims too - Alien Isolation VR mod, Skyrim VR, Fallout 4 VR... But I still can play 2d. It's not either or. Just the games that support VR are infinitesimally better than their 2d counterparts, so why should I play the "inferior" version?