Other than his demeanor and his mean Tweets, please tell us which policies of his you didn't like?
The point that broke the came's back - When he stole from the military housing deployment budget to build part of a border wall after refusing a bill that had 5 times as much for a wall. Net result, the military MWR suffered and we got a partial solution.
Lots of partial solutions.
Failed to repeal obamacare. I don't care if McCain screwed him, that means Trump let himself get screwed. Then he quit trying.
Bringing back manufacturing to the US in a meaningful way. He did some token work, but never addressed the issues that drove it away in the first place.
Failed to get National Right to Carry in every state on the agenda. Like he didn't try.
Failed to eliminate common core.
Failed to remove illegal aliens. In fact, what he did made it worse.
Triple ICE enforcement. Failed
Kicking China out of the WTO. Failed.
Balance the budget. Failed
Failed, failed, failed.
He ruined his capability to influence overseas. If the US is to be a superpower, influence is mandatory.
He cannot work with people, he dictates to them. That works well as the head of an international real estate empire where he has all the power, but not so great as a national leader.
Shall I keep going? I can name more campaign promises that he failed at than you can ones he kept.
And in doing all this, he did other things that infuriated Democrats and motivated them into crusading to defeat him.
I refuse to support going through this again.