>>272528298
1. can't fake the inner ear stuff so you get motion sickness until your brain adapts. More experience in VR and/or motion sickness medication fixes it.
2. careful game design can reduce it but it's mostly a hardware and senses problem.
3. racing/flight sims are still the usual seated experiences with keyboards or joysticks or wheels. Most non-sims use 6dof motion controllers because they're almost universally superior to kb/mouse especially for shooters.
4. rumors suggest that design idea was dropped years ago when valve devs finally relaxed their roomscale-and-teleport-only policies.