There is plenty of discussion about what insurance companies have done to claimants and most of that discussion is just scare tactics. On the other hand we have lots of discussion about how fair and good Medicare, government health care, is which is just hot air.
Medicare: Largest Denier Of Health Care Claims
Also, the monstrous insurance company CEOs, they're the ones that deny cute kids while sipping Martinis, and their companies really aren't as rich as their detractors make them out to be.
Now, mix in all the waste, fraud and abuse with the outright corruption and a government run health care system is a nightmare, especially since this fight isn't about helping sick people, it's about government power placed in the hands of a few.