system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why are so many Americans against national healthcare?
gpt
None of the reasons are good. Here are the most important, in order:

1) People prefer the devil they know over the one they don't. Most Americans haven't traveled outside the U.S., and automatically believe that Americans have it better than people from other countries. Since we have private healthcare and other countries have public healthcare, that's automatically proof that private is better.

2) Corporations can spend unlimited amounts of money in American elections. Healthcare companies have a LOT of money.

3) Everyone over 65 already has free national healthcare called Medicare. These people are also very reliable voters. Most are desperately afraid that giving the same healthcare to *everyone* will reduce the standard of their own care. Republicans won big in 2010 by telling older voters (wrongly) that the Affordable Care Act would steal money from Medicare to give to "those" people (see below).

4) There is a lot of racism in the U.S., and many especially older white voters (most of whom are on Medicare, remember) do not want to pay taxes so that members of other races can have healthcare.

5) Many Americans have been told (mostly untrue) horror stories about long waiting times for healthcare in other countries. One advantage of the American system is that if you have money, you can get elective surgeries almost immediately. IF you have money, of course.

6) Many people believe that they will not be able to choose their own doctor if we get national healthcare.

7) Depending on how you read the polling, about or over half of Americans would like for us to have national healthcare. But our system of government makes it very difficult to pass laws, especially ones big corporations don't like (the President, 60% of Senators and 51% of Representatives must agree--and most of the time our government is divided.) Combine that with the fact that the Republican Party views even the moderate reforms of the Affordable Care Act as equivalent to fascism, and it's almost impossible to pass a law to get universal healthcare even if most of the people are in favor of it.

TLDR: Lots of political corruption, and lots of people who believe that they are privileged, and that having national healthcare will mean reducing their own level of care to benefit someone who doesn't "deserve" it.