I never get the whole "no Killer App" thing, as nobody should buy a system just for one game anyway but when we have plenty of VR games like RE7, Skyrim VR, WipEout, AstroBot, Firewall, Rez Infinite, Tetris Effect and Beat Saber (to name a few) and Astrobot being a 90% rated game on Metacritic, it shows VR gaming is already improving and delivering quality experiences, there's a lot of great reasons to get into VR now.
Hopefully Microsoft change their mind eventually, as it's never a bad thing to have the option, I'm very happy Sony gave us PS4 owners the choice this gen.