Yes. But if I had a time machine I'd go back and time and screw people over. Like pop up behind Hitler at Nuremburg and push his fat ass to the floor, maybe kill him and before the Nazis come at me snap to another time.
Then take a machine gun and kill the people that were crucifying Jesus, and maybe do some other stuff. (Ride a dinosaur and set a Roman village on fire with a flamethrower) And because I f**k with everyone's existence, we're going to die anyway.