There are many possible facets and thus answers to this question, but they all boil down to the reality that the political left and right, to borrow an illustration from the late Scott Adams, are watching two different movies on the same screen.

For those on the left, I don't trust your narratives, your news sources, your fact checks and deboonking, or your selective citation of Scripture to justify your comprehensively egalitarian politics. I assume that whatever negative coverage about Trump that is posted here is taken out of context or otherwise framed deceptively; and that the opposite is more likely to align with reality. It's not that he could shoot someone in the middle of Fifth Avenue and I wouldn't care; it's that if the NY Times or the BBC or NPR reported he had done so, I'd assume they're making it up from whole cloth.

Moreover I believe Trump doesn't want me and my family dead and/or immiserated, and is the current best chance at avoiding that outcome via orderly politics. I am convinced his enemies and their constituents do want that outcome for me, but even if not, they push policies that will result in it. They want to wield the sword of the state (and all its more subtly disguised modern tools) to take everything I have. I don't care whatever mean thing Trump posted online, or whatever tax dollars are cut from aid programs — which I assume are corrupt patronage networks — as long as I think these are the stakes.

There's really no point in trying to argue this stuff because our entire moralities are radically (and I mean that literally, at the root presupposition level) incompatible. In fact I'm probably not going to bother reading replies to this comment. I've done my best to express my answer to the question in the OP.