Ya no problem. The US switching to a single payer system is absolutely something I myself and many of premed/med school friends have thought about. It would really suck, like you said, to go through all these years of training looking towards a 200k+ salary and then end up getting 100-120k. The reason I don't think it will happen in the next 10-20 years is for one, the government really sucks at agreeing over almost anything. I mean they have been arguing over a 20 billion dollar wall for the last few years, I don't think they could all come together and push through a multi trillion dollar healthcare plan though, at least not without years or decades of social and political support from the majority of players. Which plays into my second point that even if the Democratic Party had control of the house, senate, and president, there are still Dems that would vote against these bills, as they are not as left leaning as many of the most vocal Dems today. Not to mention that the supreme court will be controlled by conservatives for a while, whether they vote left or right can vary slightly, but this kind of system would be challenged in the supreme court. Another point is that there is, and will constantly be healthcare lobbying against this kind of system. The US spends over 3 trillion dollars a year on healthcare, thats a lot of money for a lot of people, and they are going to fight to keep all that money coming.
Also, this is the internet, you or anyone else are welcome to challenge any point I made, I'm not going to be offended or anything lol