I bought a quest and a valve index around the same time, one for untethered casual and social gaming in the living room, the other for hardcore gaming in the bedroom office. The quest is currently gathering dust, the index is used daily for several hours playing racing sims (with a cockpit and a motion simulator the experience is just unbelievably fun). The seated experience is great, but teleportation is boring as hell, and smooth locomotion just doesn't feel right when you're standing still (I can race an F1 car at 200mph no problem, but skyrim VR is the only time I've ever felt motion sickness).

I'm a bachelor so I have a huge empty space in my living room. When I first got the quest I could walk around freely in a 12x12 area, and the first thought that went through my mind was "holy shit, if I could just keep walking this would be incredible. Like, I never want to stop incredible". If they can ever sort out the treadmills, or it becomes common to open up large gymnasiums for group VR sessions, I could see it becoming way more interesting.