Anyway, what I actually came on to say was in response to ClareBlue about what Trump has actually done.
In addition to the policies described by pointything, and that's not a full list by any means, Trump has done enormous damage to the institutions of democracy in the US.
His current behaviour is a case in point.
Yes, he is not legally obliged to concede. He is not breaking the law by mounting legal challenges and making the US wait until the votes to be certified. But there's no doubt he has lost the election. As yet there is no credible evidence of fraud, certainly not on the scale of 10s of 1000s required for him to win. He's spinning it out just because he likes to do things like this (which is where personality becomes important – especially with someone as extreme as Trump). And this is having real-world consequences. The incoming administration cannot get security briefings and cannot get the official transition funding which is allocated to ensure the US doesn't have lapses every time it changes president. In the middle of a pandemic killing 100s of 1000s of Americans, when the new team has to hit the ground running.
Trump's refusal to concede is also winding up the rasher part of his base who like to do things like drive cars into crowds or travel to other states with weapons to spend the day play-acting policeman and eventually shoot people.
He's not the first candidate to lose an election. It's not even a particularly close election, or one with obvious issues like hanging chads. Other losing candidates concede for the good of the country. Trump isn't interested in the good of the country.
And it's all like this.
Eg We don't know whether Russia's proven attempts to influence the 2016 election were successful, but Trump acts like they were and is beholden to Putin (and also easily played by him emotionally). Trump has openly said he believes Putin over US security services; he dismisses US translators and has discussions with Putin without any US officials present; he rips up documents daily instead of letting the records office file them; he demands the director of the FBI give him personal loyalty instead of keeping the oath of loyalty to serve The People, and fires that FBI director for not putting Trump above The People. And we can be sure that Trump demands similar personal loyalty from other servants of The People.
I could go on.
Even if I liked his policies, I'd still be horrified at his attempts to dismantle the institutions which secure democracy in the US.