I hate cast iron, but ‘seasoning’ is just a misnomer that was adopted to refer to the oils polymerizing on the pan. The oil (usually something like canola) is literally bonded to the metal.
Not cleaning a cast iron pan is gross, fats left in the pan will go rancid.
The only soap you can’t use is lye based as that will strip the seasoning off.
That’s just not true, at all.
Car insurance is mandatory if you have a car in the us and health insurance is mandatory in many states in the US.
Many landlords require renters insurance, and banks require homeowners insurance.
In my state workers comp insurance is mandatory if you have more than three employees.
Banks are required to have fdic insurance. I’m sure there are many more examples, but that is just off the top of my head.