Come on, even this nightmare scenario isn't that nightmarish. The POTUS commands the nuclear arsenal, which is arguably more powerful than knowing my shopping habits.
Yes, because I was implying Trump would nuke the U.S. /s
You have only to listen to his rhetoric on foreign policy to connect the dots about how giving him power is potentially harmful to the U.S. Unless you think he's going to try to sell everyone steaks and golf course timeshares as the POTUS, then I'm worried.