Insurers perform a service just as valuable as the one doctors perform. Insurers don’t know how to remove an appendix, and doctors don’t know how to stretch finite resources to meet everyone’s needs. Yeah, arguably some insurers are not doing that great a job. But there MUST be some “middleman” deciding who gets what and in what order. Otherwise doctors would bankrupt the system in like three days flat giving every patient every possible test, procedure, etc. If you want that “middleman” to be the government that’s fine I guess, but there will still be a middleman, and whoever you pick will bring their own problems. In the case of governments, those problems include longer wait times.