I can get it. I can totally see something being fun if it's 2-10 hours a week, but not fun if it's 40-50 hours a week.

Also very different when you are in control of exactly when you're doing it, you can pause anytime you need to go grab laundry, etc.

Driving/train sims have pretty much zero appeal to me, but I enjoy flight sims a fair amount. I'd never want to make the sacrifices to my life that would be required to be a commercial pilot. Being a personal/hobby pilot is very expensive and quite a bit more dangerous.