1.) Have you used VR? If yes, what headsets have you used? What did you like and dislike about it?
Mainly though not only PSVR. And it's far from what i'd actually need to be really convinced in terms of resolution, viewing angle, weight and comfort. What i like is the immersion as lomng as there's no immersion breaker, which happens pretty easy for me. Also, while i never get motion sick nor seasick or anything like that something like Robinson VR with free controls can nauseate me within ten minutes. And i really hate shit like teleporting.
2.) Are you interested in VR? Why or why not?
Not that much. It's a gimmick to me. Most of the stuff i play i prefer on a screen and not as 'locked out' from the world as VR actually is. And for the rest i'd occasionally play in VR it's way to expensive as well as not the tech level i'd want.
3.) Do you think VR will be popular in the future? Why or why not?
In mainstream gaming? Not within the next ten years. We might see VR die a second time, like in the nineties, though i think there will be a VR mainstream market one day.
4.) What games do you want for VR? What games would make you buy a VR headset?
Right now, nothing. I'd actually buy no game i can only play in VR.
About the headsets:
Full viewing angle and at the very least two 4K screens is the bare minimum i'd think about getting VR. That and they'd have to get more comfortable and way lighter than they are.