Just the amount of innovation alone is enough for me. Yes sometimes you need to wade through some poorly made wave shooters but when a game offers something new and unique and is made for VR in the RIGHT way? It is a thing to behold... I still spend a lot of time in flat games and most of that is playing indie games because most AAA studios are just not making anything new. Whereas for the most part, when you start a new VR game up there's always something unique going on 

"How have they used VR to make this game special?" is one of the first things I ask myself and even when sometimes the game itself isn't the best, I appreciate the creativity gone into it.
Some people just need to find that one game that makes them say "Yes. Ok NOW I get it" because it's probably already out