Government Healthcare?
Do we really want the people who buy $600 hammers to run our healthcare? Do we really want the people who have the power to legally steal our homes and property to also make life or death decisions concerning our medical treatment? Do we really want the recipients of the most expensive entitlement program ever (congress, the senate) determining what benefits WE get, when it inversely impinges on their THEIR benefits?
The US government is currently "shut down" meaning that non-essential services are not available. (Why do we even have ANY non-essential government services anyway?) If they were running the healthcare system, at what point might they decide to shut down a hospital, or the labs, or only the 4th floor?
Private hospitals can go out of business, and they sometimes do. But so far, they always seem to be able to find buyers on the private market before actually shutting down, and the actual service provided is never interrupted. But if the government decides that a certain hospital is non-essential, and shuts it down for a few days, or weeks, there is no recourse, there is nothing anybody can do about it. No private investor, no better managed medical team, no way to make that hospital not shut down, at least not as long as the government controls it.

