I think my motorbike vs. Camry analogy is reasonable. Vast numbers of people ride motorbikes every day and live for decades without encountering a problem .Others can end up having their lives turned upside down as a result of some accident. A social safety net is not designed for everyone to bounce on but to catch the most unfortunate in society and help them cope as best as possible at their time of extreme adversity. My point is that the US, especially with the impending destruction of the Affordable Care Act and Medicaid defunding, is about to lose its very short-lived and already weak safety net. If you can go back to Canada when adversity strikes, you are in good shape. Most people don't have that option.
My intent was to outline the fact that the US safety net is weak and there are plenty of corner cases that one could fall into from which recovery will be tough. Reduction in Medicaid will only worsen this. If you have coverage that you feel covers you in a majority of worst case scenarios, then you are in good shape but hopefully you are up to date on your read of the coverages. The Canadian safety net, in my opinion, saves one a little bit from this planning.
[1] https://www.dallasnews.com/news/local-politics/2013/08/02/gr...
Also employers pay for your medical insurance with pretty good plans, if you have a medical issue your paying at most ~$5k and $3k/yr for family medical insurance.
So universal healthcare isn't a good enough reason to not move to the USA. Also the US might get universal healthcare in that time span.