To go along with this is also risk to one's health and potentially death.
53 per 100,000 pilots was the death rate amongst pilots in 2018 according to The University of Delaware .
This doesn't sound like a lot, until you consider it was the #2 most dangerous occupation in the US that year.
Behind #1 Loggers (111 per 100k) and ahead of #22 Police Officers (14 per 100k).
So it's one thing to have a flight sim rig and at worst fall off your chair. A whole another thing to potentially make a mistake in an actual plane and pay the price with your life.
Adding a bit to that: you can do all sorts of stupid maneuvers in a simulation with zero consequence, like doing a barrel roll with an Airbus Beluga.
Plus, there are combat flight sims.