You know, as if he would somehow be materially different from any other "leader" in the same position?
Wait...you mean he might be a bigot against The Little People?
He might curtail basic human rights at home, and ignore them abroad?
He might go dick-swinging around the globe, in a way that might engender blowback?
He might shove societally suicidal policy down the national gullet?
He might do all the above by lying, deceiving, and conspiring with not-nice people to get what he wants, all at our expense?
You mean, in general, that he just might act with the impunity of a dictator, rather than with the accountability of an executive custodian?
ZOMG, your powers of perception are simply off the charts, man. With informed, enlightened attitudes like that, you have me, like totally convinced that we can totally prevent even the slightest bit of all that by simply electing someone else. Hill! Bernie! Cruz! Rubio! Kang!
Ferchrissakes, people: yes, Trump is frightfully unfit to win The One Ring Sweepstakes. But all this "leave the country!" "the sky is falling!" melodrama really does little more than out you as either a weapons-grade hypocrite, or as unconscionably, nearly unbelievably naive. They're all unfit to wield power...over a cat, much less 330+ million people. And they all have been since before any of us were born.
On the other hand, maybe you should leave, if you can't (or refuse to) see that the the real problem with The One Ring Sweepstakes isn't the competitors, but the prize. If the office disposes of so much power that just putting a slightly-less-sophisticated buffoon in it can cause the whole thing to come apart, then maybe--just maybe--the office has too much damn power.