And insurance companies add nothing to healthcare. They contribute nothing. They streamline nothing. And THEY are the ones who make your health care decisions for you, NOT your doctor.
Got a back problem that could be easily fixed by surgury? Well screw that, insurance isn't paying for that. But they'll be happy to put you on painkillers for the rest of your life so you'll be stuck in a parasitic relationship where you have pay them forever to afford your pain meds.
They only exist to transfer wealth from sick, financially vulnerable people to the billionaire class.