Lol! I'm used to playing games and gaming alright!
I been gaming since the Pong days and my first Spectrum 48k not long after!
The reason I had motion sickness with FSX in the beginning was because I wasn't used to the fast head pan in the VC, plus being sat a little bit too close to a huge screen! It also turned out I wasn't using the optimal settings for a PC/TV setup.......weird scan and latency issues, plus putting the TV into 'Game Mode' helped a lot.
I'm ok now, but for sure, VR would take some getting used to alright. But I'd just grind it out and get used to it. If it turns out a viable alternative option for gaming, it's the future for sure, and would be worth the trips to the toilet!!
Btw, like you say above....it's interesting how 'motion sickness' or 'simulator sickness' is brought on! Basically your brain can't cope and goes into panic mode!
As it feels you sat still, but it see's movement from the image, can't figure out why, so it makes you feel nauseous and throw up as it thinks you're probably poisoned!