Thanks for posting this. I remember getting strange looks when I said I could NOT run at games, or participate on true milsims that would be longer than an afternoon.
Simply put and not going into details; I like to be able to walk the next day, or to have a heartbeat... dealing with medical issues that can kill you for real is not fun. It's possible to cope, but not easy when you dont 'look' sick.
There are those of us who try our best but just cant do some things.
So when I played I simply adapted my gaming to fit my limitations and still be useful, or went to the staging area and maintained guns.