For non-games I agree. I'm working on a VR design tool and I've given myself the constraint that user are sitting in a swivel chair with elbows on armrests most of the time. I'm hoping that it'll give enough room to do interesting stuff without straying too far from keyboard-level laziness.

For games, I've been playing VR archery since I got the Vive almost a year ago and I still love it. It is tiring but so are traditional sports and people do those.