Insurance is all about risk. Yet neither insurance companies nor their policy-holders can do anything about one of the biggest risks — namely, interference by politicians, to turn insurance into something other than a device to deal with risk.
By passing laws to force insurance companies to cover things that have nothing to do with risk, politicians force up the cost of insurance.
Annual checkups, for example, are known in advance to take place once a year. Foreseeable events are not a risk. Annual checkups are no cheaper when they are covered by an insurance policy. On the contrary, they are one of many things that are more expensive when they are covered by an insurance policy.
All the paperwork, record-keeping and other things that go with having any medical procedure covered by insurance have to be paid for, in addition to the cost of the medical procedure itself.
If automobile insurance covered the cost of oil changes or the purchase of gasoline, then both oil changes and gasoline would have to cost more, to cover the additional bureaucratic work involved.