When I went to the ER with acute appendicitis, was admitted, operated (during that very night, no less) and subsequently released after a couple of days, with close to no paperwork ("Name? SSN? OK, you're good. Take care") I most definitely saw the effect of my health tax.
When someone close to me went to the ER with acute excruciating stomach pain, had a cholecystectomy, had to be re-operated due to complications, spent >1 week in the hospital, and was released with close to no paperwork ("Name? SSN? OK, you're good. Take care"), paid a couple of tens of USD for their painkillers during the recovery period and had their lost income during sick leave 100% compensated, we most definitely saw the effect of their health tax.
For me, that was very tangible. And I'm quite happy about paying 8.2% of my gross income to cover that service - which also covers whatever I'll get in Social Security when/if I retire.
And just for the mathematically challenged out there: If I were making $400k/year, that 8.2% would be $32800/year, or $2733/month. If I were making $100k/year, that 8.2% would be $8200/year, or $683/month. What is the median US income and how much does the average USian pay just for their health insurance?