My personal opinion is that VR is not VR without Roomscale.
I'm a sucker and I've jumped on quite a few technologies as an early adopter (120 fps monitors, 3D Vision, 3D Vision 2, G-Sync, Sound Blaster X-Fi, etc.), but VR I was always hesitant on, never jumped on the Oculus hype train.
I was not interested at all in VR until I saw the Vive + Roomscale and demo'd it, and it completely changed my mind and I instantly pre-ordered it.
I have played some seated / non-roomscale VR games and it looks really cool, but without being able to interact with the environment it's just not worth it to me. The increased immersion is not worth the downgrade from 1440p + 144 Hz + ReShade + G-Sync + No lense issues, when I'm not able to interact with the world.
Part of it is that my setup is also not geared for seated experiences, my lighthouses are in another room away from my computer, so I don't have easy access to M/KB in seated VR.
Not to mention the fatigue endured from wearing VR, I can game much longer on a regular monitor than with a VR headset, so if I'm going to do seated gaming I'll use what's most comfortable for me.
I realize this doesn't apply to everyone and some people prefer seated VR, to each their own. To me without being able to interact with your environment though it isn't truly VR, just a fancy monitor. Maybe I'm weird, but I actually kind of prefer 3D Vision over seated VR, as the image quality is just so much higher, such a shame the tech is pretty much dead these days. I was really hoping the VR surge would improve 3D support for games, but that doesn't seem to be the case.