You seem to want choir boys to be president. But choir boys sing in the choir, they don't fucking run for president.
Washington, Adams and Jefferson all owned slaves. Hell, all presidents until Lincoln either owned slaves or didn't stop slavery.
Jackson was behind the Trail of Tears.
Wilson used to hold screenings of The Birth of a Nation on the White House lawn.
Franklin Roosevelt put American citizens in internment camps based solely on race.
Johnson was famously racist against black people, or as he like to say, niggers.
George W Bush stumbled us into a war we still haven't gotten ourselves out of almost two decades, thousands of American lives and trillions of dollars later.
Obama set race relations back 50 years and rubbed elbows with Jeremiah Wright, Louis Farrakhan and Al Sharpton.
But Trump says mean words on Twitter, ZOMG!
On the list of the worst, most evil presidents, Trump doesn't even make the top quarter. Hell, he's in the top quarter best. Forty four men have been the president of these United States. Please, name eleven that are less racist than Trump. I'll even spot you Carter. Good Ol' church going Jimmy is probably less racist than Trump. Now name ten more.
You and perspective? Not even once.
I agree with you in the main, but I don't think you're analysis is quite right.
For the sake of argument, grant that Sociopathic Personality Disorder is a thing, and that the most evil people have something like this. An utter disregard for other's humanity. Think of a psycho who abducts women and imprisons them for sexual gratification.
Objectively, the behavior of Jefferson and other Founding Fathers was pretty much totally sociopathic by moderns standards. They actually owned human beings as property, including their children. They could do anything they wanted to them, including raping at will, which Jefferson did.
But that doesn't imply, necessarily, that Jefferson was a sociopath. From his writings he doesn't sound like it. And you could have another slaveholder who actually is sociopathic, but because the violence inherent in slavery was socially sanctioned he could conduct his evil behavior within the boundaries of the law. This is an objective reality about a person's psychological state.
Sociopathic characteristics aren't necessarily evil, it's just that this type of psychology is associated with it, because sociopaths tend to lack remorse or empathy. This pattern is often found in leaders. It turns out that not caring about hurting peoples feelings and being highly tuned into how to manipulate others by understanding intuitively how they functions allows people to succeed in some contexts. Like politics, or business leadership. If it's kept in check, such people can be very high achievers, and channel these impulses into constructive paths.
Narcissistic personality disorder (NPD) is a related condition, essentially a variation on a theme. These people are less likely to be evil, but their extreme self centeredness makes them insensitive to other's feelings. They tend to see people as a means to an end. They like people who flatter them, and consider those who don't as being enemies. (IMO, this is the root of Trumps personal failings.)
Anyone who gets close to the presidency is going to have
some of these characteristics.
What I hate about Trump is his utter obliviousness to his own behavior. He never admits he's wrong. He blames others for his own problems. He feels justified in slandering someone as being a liar just because they said something that hurt his feelings, even though it's true. He demands loyalty, but doesn't return it. He will throw anyone under the bus without a second thought if they are no longer useful to him. (I don't think he would do this to his kids, but I think anyone else is fair game.) He is a pathological liar, because as long as the lie helps him, he thinks there is nothing wrong with it. You are either with him, or you're against him. He pits people against each other for his own ends.
I don't trust him, because he lacks insight and discipline to moderate his boorish behavior to accommodate others. I think this makes him dangerous, because it prevents him from being able to separate his own self interest from that of the United States and her citizens. I think Trump is astonished that he's getting shit for his shenanigans with Ukraine, because to him the idea that
we are giving them $300m should at least entitle
him to ask for a measilly little favor...
So it's a matter of degree. Obviously you disagree, but I think Obama had good self insight to his own egoism, and could keep in check when appropriate. I don't see the same issue you do with race relations, so in my perspective Obama did about a good job as anyone could as President.
On the other hand, GW Bush was a menace, because while he did have a reasonable level of self awareness, he became convinced of his own righteousness, and by extension any decision he took was justified as being the choice of "GOD". He was a true believer, and these people are the most dangerous. "Freedom is On the March" became his slogan for the ME. People always described Bush as someone you could "grab a beer" with, and for what he was, I saw that.
Due to some of the conversations I am adjusting my opinion of Trump, and on reflection, I prefer him over some the other modern era Presidents, like Bush45, Johnson, or Nixon. But I could never see myself voluntarily subjecting myself to his company. I know people like him, they suck to be around.
I have my own theory about why Hillary would have been a dangerous President. The challenge with being President, is that you are forced to do some nasty shit for the sake of the job, as you described. Hillary is very sharp, but she's the kind of person who has to believe she is "good." So suppose there's a need to launch a military operation to protect the oil production in a given country. It's just one of those things, can't be too fussy about it, not a job for a "choir boy" as you say.
But Hillary can't stand to think of herself as just a mercenary. So instead she would try to convince herself that it's actually a military action needed in the name of "justice." Similarly to Bush, once she convinced herself of the righteousness of her decisions, it allows for far more extreme actions, as they can be justified on a "humanitarian" basis. This was allowed her to lead such fiascos like the Libya actions.
So, while I agree with your thesis mainly, there is a matter of degree. The President needs to have the self awareness and discipline these darker aspects of the job with social norms. It is this balance that Trump lacks, IMO.
So far, Trump hasn't been nearly as bad as I feared, and I really am trying to be objective about it. He's not my kind of person, but perhaps he is the right guy for job after all. It's hard for me to admit that, because there is just something about him that makes me want to punch him in his big fat face, but whatever.