In the US it baffles us as well. Though most Americans do actually want universal healthcare, anytime it comes up as an issue in the national conversation there is such massive propaganda against it, articles talking about things like ‘death panels’, hypothetical committees under more socialized healthcare systems that will decide who lives and dies, or that you’d have to wait hours at the ER. Ridiculous things like that. It’s seen as a ‘left’ issue, if you are on the right or conservative in the US you won’t be as likely to support universal healthcare, which does align with one right-wing view of ‘poor people should die more’.