A thing that I have not seen mentioned is that if Biden dies or becomes infirm due to extreme oldness in office, you will get President Harris, and you could do a lot worse, frankly.
If Trump dies from the oft-fatal combination of Adderall and cheeseburgers, you will get whichever bloated, decaying, monster is about to bob to the surface of the cesspool of candidates.
Both of these scenarios are totally possible.