The years of my life when I had no health care, the threat of something happening (a serious accident, terrible medical condition) hung in the background, destroying any feeling of security I had from squirreled away funds.
Both of my pregnancies we had no insurance. Not having insurance can change the kind of care you get and influence your choices. Even people who have insurance are vulnerable.
John Oliver's recent show (expletive laced - if you know Oliver, he is colorful in how he gets his points across) attacks the arguments against national health care, which revolve around cost, wait time, and choice. He also blew holes in the "medicare for those who want it" argument.
Summarized at the DailyKos:
John Oliver DESTROYED every argument against M4A tonight.
https://www.dailykos.com/stories/2020/2/16/1919769/-John-Oli ... -M4A-tonight