They are leading questions. You're assumptions about single-payer, based on what you think "some politicians" said, are baked into your questions. Again, there exists hybrid systems. Take a look at Spain or Australia. Canada almost exclusively works off it's public system, yet private insurance still has a minor role.
Maybe I'm "crazy enough" to think that there should be zero profit-motive in health insurance, but even I can confidently say that a public policy scenario wherein all but a government plan is prohibited just isn't realistic, nor does it reflect what many other western countries have done for 30+ years.
Maybe I'm "crazy enough" to think that there should be zero profit-motive in health insurance, but even I can confidently say that a public policy scenario wherein all but a government plan is prohibited just isn't realistic, nor does it reflect what many other western countries have done for 30+ years.