Should we replace private health insurance with a government system?

At the heart of the 'Medicare for all' proposals championed by Senator Bernie Sanders and many Democrats is a revolutionary idea -- abolish private health insurance -- an act that would be profoundly disruptive. The private health insurance business employs at least a half a million people, covers about 250 million Americans, and generates roughly a trillion dollars in revenues. Its companies' stocks are a staple of the mutual funds that make up millions of Americans’ retirement savings. This is what 737 people said about the idea. What do you think?