The best analysis of Trump's character I have ever read.
https://www.dailykos.com/stories/2018/11/14/1812821/-Trump-is-finally-revealing-himself-as-the-sick-incompetent-joke-we-all-knew-he-was?utm_campaign=trendingDonald Trump has not one iota of civic involvement in his entire life. He has never pursued any activity that was not geared, directly or indirectly, for his own benefit. The concept of public service is a wholly alien concept to him. So, when called upon to perform a simple human gesture, such as standing in a memorial to fallen soldiers at Belleau Wood, or laying a wreath at the Tomb of the Unknowns, he balks. He shakes his head in puzzlement. He doesn’t get it. There is no sense of obligation on his part, because there is no sense of shared humanity. He simply doesn't care.
But his actions in Europe and at home this week are just symptomatic of a deeper problem—the same dearth of feeling and empathy he brings to issues involving human contact render him wholly unfit to the tasks associated with the U.S. presidency. Someone with no real sense of obligation to his fellow countrymen cannot pretend to have any real policy goals.
The “policies”—such as they are—that Trump has followed have been spoon-fed to him by the far right wing of the Republican Party, which understood that he would swallow whatever they plated before him—as long as it satisfied his one real, wholly narcissistic goal, which was to be perceived as “powerful.”
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So what does he do? He has no idea. It’s all self-defense and self-preservation at this point. He’s looking on helplessly, lashing out indiscriminately, as his people jump ship. They see what's going to happen, but there’s nothing he can do about it. He's never had an agenda, beyond preserving his own “entitlement” to power. Remember, this is a President who barely “works" two hours a day. He spends the bulk of his time watching TV or playing on Twitter. It’s not that he’s abandoning his day job—he never worked the job to begin with.
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But further down in the article is the really telling example. Instead of attending himself, Trump sent Mike Pence to the Asia-Pacific Economic Cooperation summit.
This summit, and the agreements that are reached there, have major implications—huge implications—for our country’s economic future and its place in the world. And while Trump ignores it, Putin is there for Russia, Moon is there for South Korea, Modi is there for India and Xi Jinping is there for China, “attending meetings across the region looking to broaden their country’s influence in the South China Sea and expand multilateral trade agreements." Meanwhile, Trump is in his bedroom. He doesn’t do "policy" not just because it's too hard to understand, but because he’s never really cared about it.
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Thank you so much for such a clear, well informed, and detailed post! And it’s especially useful to see that sociopaths are responsible for their actions and don’t have sociopathy or abnormal frontal lobes or anything as an excuse... Trump’s having this particular mental illness and his choosing to be this way are not mutually exclusive. Very important to know. Thanks! 
Yep, that pretty much describes Trump.
As such, he's incapable of empathy. As one of his biographer's stated, Trump's main interests are self-preservation and self-aggrandizement. He's like a NY sewer rat. He will do anything to stay alive politically. He'll lie, cheat and screw over anyone who gets in his way. That this vile man is president proves how much we have devolved as a nation. It's depressing.
He is not smart, but he is cunning and has a knack for survival in the toughest conditions. He is tenacious, filthy and is fearless in an environment where the decent elements try to stamp him out. The world of NY real-estate and mob bosses is where he feels most at home because he can be the scumbag that he is and fit in comfortably.
I have also described him as a giant NYC cockroach. They are basically just like the rats, except they are harder to get rid of. 
He is nothing but scum.
To me he's like a NYC sewer rat because, although he's an intellectual wasteland, he has street smarts and always manages to survive. He's like an evil road runner. No matter how many anvils are dropped on him, the SOB rises again.
