Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Is it common in the US not to pay medical bills?
Personal story here: I ended up at the Santa Monica hospital without insurance and left with a bill of $30k-$35k. They really helped me, so I felt like I had a duty to pay them. However, close inspection revealed ridiculous markups on some items which I would have disputed, but I noticed that I had been billed for a few thousands of services not rendered. I got very mad at them for this, they apologized, told me they'd fix it. I never heard back from them and they never put it in collection either. I'm assuming they (rightfully) got scared that I'd go to court and this would be bad publicity. Sometimes I feel guilty I didn't pay them anything, sometimes I feel like they tried to screw me.