Give me a different scenario. I don't run red lights so if someone else runs a red light and injures me that money comes out of their auto liability insurance. In the case where I might get injured and rack up a six-figure medical bill, I will pay that bill. It's the assholes that don't that are increasing your costs, not me (in this hypothetical scenario where I don't have insurance).
Because they're forced to have auto insurance, or at least are supposed to be. I don't know whether you can afford a six-figure medical bill or not, or will allocate payments for payment if you can. Most people can't. Some people won't make the allocation, notwithstanding good intentions.
I'll give three examples of pretty common medical costs, and all run to at least five figures. All are mildly age related, but not so age related that they're inconceivable for anybody.
Four or five years ago I had a macular hole. A macular hole is basically a detached retina, but instead of detaching the retina wrinkles. With a macular hole, it's hard to see. It's not tied to genegics, or injury, or anything except that as you age they're more common. It's cured by a vitrectomy, where a surgeon sucks all the goo out of your eye and then fills it up with gas to push the retina into place. That's usually followed by cataract surgery because the gas scars your cornea, so by the time you're done you've been to a surgeon a couple of times.
Second example. While I was in the waiting room for the first surgery the nurses kept coming over to me to ask me what drugs I was taking. They thought I needed to be taking something because everybody else in the room was there for eye surgery associated with diabetes or blood pressure. It was a group that wasn't rich, and I suspect that because of cost or ignorance they had chosen not to treat their diabetes or blood pressure, so they developed complications. So there you have two examples: Me perfectly healthy having out of the blue to go through a bunch of expensive eye surgery, and a lot of other expensive surgeries going on because of failure to pay for earlier less costly treatment. I suspect I was paying costs of every surgery in that waiting room. I guess people could have chosen to go blind, but that would have cost me too.
Third example. Three weeks ago I fell when I tripped on a Houston sidewalk while I was jogging . My stupidity, I was jogging on a Houston sidewalk, but who isn't stupid sometime? By the afternoon I couldn't walk. Wednesday I have surgery on my knee.
Even if you're healthy, shit happens, and it's really expensive when it does. I'd just as soon people pay for it by having insurance if they can afford it, because I'm a stingy bastard. I really don't care much about their choice, because they're likely to make a choice that saves them money and costs me.
Bottom line is that whatever example one picks, you can say it won't happen to you, but something will. And either you cover the cost or the rest of us cover the cost, and frankly, I don't trust good intentions.
Edited to make HH happy.