1/ Trump doesn't care about legacy, family, or duty. He sure as fuck doesn't care about the law, or even money (he knows the illusion of money is just as good).
Trump only cares about himself, and his only motivation is power. An illegitimate "win" is a win to him.
2/ Imagine Trump playing a video game.
He'd try for 30 seconds, get destroyed, and quickly resort to cheat codes to get by.
After celebrating his ill-gotten victory, he'd quickly realize that he's empty inside. There would be no sense of accomplishment.
3/ From here it could go in two directions. He gets bored of the game and does something else, or he plays again.
Because he has no interest in developing any skills, he would continue to cheat using more elaborate codes.
He'll never be satisfied, so he'll continue to escalate.
4/ Games aren't designed to be played this way. If you keep piling on cheat codes the systems stop working how they're supposed to.
If you keep at it, the game becomes almost unplayable.
The issue is, Trump treats the Presidency and government this way.
5/ Trump has trapped himself in a nightmare. He's stuck playing a glitched out game he hates. He knows if he stops, he'll go to prison.
He's miserable as President, truly hates it, but he's cheating to stay in power out of necessity. He doesn't care what breaks in the process.