Belle5 said:
I love

the people who think it has something to do with psychology. I am a thrill seeker--the wilder the ride or simulator the better! I went on MS two years ago expecting to totally love it and I had a horrible time! I could ride ToT 20 times straight and love every second of it!

Ditto. Psychological my patootie.
I never had any problem with any ride. M:S dang near killed me.
I had basically the same experience as the OP (although, OP, the esophagus is where the food goes, the trachea is where the air goes

.) I swear to God and on my children's lives, I had to fight to breathe. Felt like I was going to pass out and was so worried I'd die if I did, because I'd just quit breathing. And total vertigo when I got off.
And none of the warning signs would have helped...none of those things apply to me.
And I followed the rules.
I don't care WHY people die on, or immediately following Mission: Space. Call it an UNLUCKY ride for all I care. It makes some people sick, and a couple people dead, and I'm not riding it again.
But, as has been pointed out to me, it didn't kill me. And the vast majority of folks do just fine.
I wish I knew why some people get socked and others do fine. There is a reason - a physical, not psychological reason - for it, and I'd like to know what it is.