Eh, you could argue the same for motion controls prior to Wii. There were tons of motion control gimmicks prior to Wii, but then when Wii made it explode, and both Sony/MS entered into the fray - it still didn't stick. It was a fad, and until/unless the tech makes more extremely large jumps - it's pretty gimmicky.
I completely disagree.
I think VR will see some success, since it's getting such a big push from the industry, but it's niche and probably will be for decades to come. It's expensive, it's uncomfortable, it has tons of limitation, it's not healthy, and ultimately the tech is early enough that - yes - it's a gimmick. It's a fun demo. It's a cool early peak at what may one day blossom into something more interesting... but ultimately, I'm completely with those who say VR is not the next big thing in gaming... it's the "motion gaming" of today.
Now, once it matures, and maybe even integrates with other compelling technologies, it may not be a gimmick... but right now, yeah - it's just a circus side-show that's worth a few bucks to see and experience, but not the daily bread-and-butter kind of entertainment traditional gaming is.