It's incorrect to say that premiums are only prepaying for coming expenses, but not risk sharing. They cover both. That's the whole point, health insurance today is a bundle of all of those things.
While FICA taxes (partially) pay for senior citizens' healthcare, your health insurance premiums both pay for your annual physical (especially on Platinum PPO plans) as well as care for sicker people that are not eligible for Medicare/Medicaid. I assure you that there are plenty of sick people that are under the age of 65, and actuaries price them in when computing premiums for private health insurance.
And as a minor point of order, even Medicare isn't "free" for seniors — the FICA taxes only cover Part A benefits, and seniors still need to pay monthly premiums to Medicare to cover Part B benefits. And even those benefits aren't 100% covered — Medicare only covers 80% of outpatient care.
I agree that it’s risk sharing, but my point is that it’s more akin to a tax and it’s useful to view them as a tax because it’s specifically structured via the maximum age rating factors and max out of pocket to give older and sicker people a proportionally higher benefit than younger and healthier people.
While my auto insurance premiums will probably go up if the insurance company experiences losses much higher than expected, the insurance company will raise premiums on the people causing accidents more than myself (and maybe even drop them if they deem them uninsurable). If health insurance claims come in higher, the younger people will pay proportionally more even though they’re mostly going to just be getting a physical and flu shot.
While FICA taxes (partially) pay for senior citizens' healthcare, your health insurance premiums both pay for your annual physical (especially on Platinum PPO plans) as well as care for sicker people that are not eligible for Medicare/Medicaid. I assure you that there are plenty of sick people that are under the age of 65, and actuaries price them in when computing premiums for private health insurance.
And as a minor point of order, even Medicare isn't "free" for seniors — the FICA taxes only cover Part A benefits, and seniors still need to pay monthly premiums to Medicare to cover Part B benefits. And even those benefits aren't 100% covered — Medicare only covers 80% of outpatient care.