We get better health care in the US.
The US also subsidizes drug discovery for the rest of the world. In the late 90's, I worked for a company that made robots used for drug discovery. Every once in a while, they would put up a chart showing year over year growth. There was a healthy, steady climb until the Hillary health care initiative. The company almost went out of business. Drug companies froze spending on drug discovery because it wasn't worth their while to spend the hundreds of millions to bring a new drug to market if the US was going to go to a single-payer system. US drug prices pay for R&D, and all the countries with enforced pricing get a free ride.