Because its completely obvious to anyone with more than a couple of functioning brain cells that Trump and his ilk committed a litany of state and federal crimes which only through his abuse of officially office, he has managed to avoid prosecution for. He's a wannabe autocrat and despite his claims, has no interest in putting America first and gives precisely no shits about anyone other than himself and his allies.
He's a pernicious liar and conman. His downfall is necessary and any legal jeopardy he finds himself in due to his corruption ought to be celebrated.
Unfortunately the US has some more problems that won't be resolved be getting rid of Trump, namely the political setup allowing for minority rule, FPTP and 2 party system.
The other factor is the majority of the "conservatives" who are abjectly ignorant and proud, parochial and conspiracy minded.
If you believe that DJT is some proud patriot who offers some kind of hope of a better America, you are simply put as thick as pig shit.