I saw your edit that made it a little clearer.
Yeah, that's just how insurance works, it's a racket. And you are also correct that i'm way in the red on outlays vs benefits. The only problem with not having it is that costs are increasing in a large part because of people not being able to pay for the services. When they can't pay, the hospital has to recoup those costs somehow, so they jack up their prices to get that money back, hence increasing insurance premiums and making it more unaffordable. Your "true cost of service" isn't really that at all, it's your costs plus whatever the hospital thinks it can charge to recoup their losses for providing care to the indigent.
We gotta pay those costs anyway, i'd prefer we be able to control those so they don't spiral out of control. That's why single payer is so attractive, it cuts out the middleman and forces hospitals to negotiate those prices with the government, who can bend them over if it gets unreasonable. The public option would probably be better for insurers, but they didn't want that either, so fuck them.