[Dismas]

In a country of 300+ million people, I'd be surprised if Trump and Biden are the best the U.S. has to offer.

Not really answering the question, but when the two choices you have as an American are both controversial & flawed, you'd pick the one that appeals to you the most. On the left Biden, on the right Trump and unfortunately instead of moving around the political spectrum to be genuinely appealing, they stay cozy with their "loyalists" while weakly convincing the majority to vote for them instead of the other option.

Agreed. American politics are pretty much a game of Red vs. Blue. Easier to divide/conquer when there's so much polarization. Most people would probably prefer some shade of purple.