I literally think he might be the absolute worst president in American history, at least as far as sheer incompetence is concerned. I can't think of a single genuine accomplishment to his name. He seems to enjoy enacting cruel and inhumane policies, like separating children from their parents at the border, or attempting to reduce the living standards of disabled people. He is grossly negligent, as evidenced by his failure to provide adequate humanitarian aid to Puerto Rico in the aftermath of Hurricane Maria; more than 3000 Puerto Ricans have died due to extensive infrastructural damage. That number could have easily been reduced had the Trump administration done more to help them, rather than throwing a few paper towels and focusing on NFL quarterbacks kneeling during the anthem. And of course, there's his abject racism and hate-mongering, his numerous scandals, his authoritarian sympathies, and conduct unbecoming the office to which he's been elected.
History will remember Trump as a disgrace to the Oval Office and a national embarrassment.