Playing it straight and responding to the DU OP unasked question, during Primary season Trump was in the lower half of my order of preference, above the "Oh, dear God, please no!" group. I voted for Cruz in CA's meaningless June primary, and would have voted for Carson had he made CA's ballot (IIRC, he pulled out too early).
I didn't see that Trump had any principles on which he would stand and had stood for any significant time. And his record of being a bit of a "government entrepreneur" I do not like. But when it came to a choice among Trump, The CHILL, and the several wastes of a vote (A Libertarian who favored arcane stringent gun laws? Is that a newly discovered species of Libertarian?) it was not tough. The damage The CHILL was promising to do to the US was more than I was willing to contemplate. So I voted for Trump, but really against The CHILL.
My expectations of Trump are low, and so far he's far exceeding them. All this being a very long way of saying that I'm close to the polar opposite of being in a state of buyer's remorse.
Speaking very speculatively, I wonder if one "principle" on which Donald Trump does stand is pleasing his customers. If so, he could do a lot of right things for the sake of pleasing his voters.