I mean. yeah single payer is nice, however that's really not even on the horizon for the US. For most Americans, especially those who actually have to know how to fully utilize their insurance (if lucky enough to have it), there's no benefit for them to worry too much about a single-payer or socialized system. They have immediate needs and immediate solutions. They need to get their prescriptions, their surgeries, and their doctor's appointments. It's not "supporting" it, as so much as it is the devil you know.

Practically speaking, compared to standard PPO/HMO insurance, HDHPs are pretty good. If you are low-maintenance health-wise, you don't pay for your physical, are going to spend maybe couple hundred bucks on sick care and maintenance meds. If you have chronic illness, you will only pay the deductible before your care is 100 percent covered, so a hospital stay would be enough to meet your out-of-pocket max, and everything else is covered 100% by your insurer (whereas the traditional plans have 6-10k limits, the HDHPs are much lower at 1-2k for a person and 2-3 for a family). Especially with HSAs, which are savings/retirement accounts for medical expenses, that some employers will pay into, so basically free money to pay copays, prescriptions, even stuff like aspirin and bandages.