“Insurance” is (or used to be) a voluntary form of socialism that spread the risk of severe loss across a large group of people, using actuarial calculations to determine the profitable rate for that large group or “pool.”
Certain behaviors or existing conditions kicked individuals into a “high risk pool” with a different set of actuarial calculations to determine the profitable rate.
That is still the case with auto insurance. Have a lot of speeding tickets or accidents? Got a really fast, expensive car? Insurance then costs more money. No one questions this.
Yes, but if you have cancer, or have had open heart surgery, or do you weigh 400 pounds and smoke, then you are high risk. Why should someone with a common condition, such as minor and asymptomatic atrial fib, or type two diabetes not requiring insulin, or perhaps a history of chronic migraines . . . why should such people also be forced into the high risk pool. If you leave it to the insurance companies, they will be. And in the past, so if insurance was very expensive. It makes no sense to put all people with some form of condition, mild or severe, in the same pool, as if they are lepers. If all people with whatever condition are in the same general pool the risk is spread more evenly and efficiently.