Stop being a retard. You can never truly "be" someone else because you're more than just the circumstances of your life. Even if you were bodyswapped into someone else, you would still be you, just with a different person's body. Even if you were a 1:1 clone of someone else, you would still make different choices and you would still be a different person. Play Metal Gear Solid, I think it highlights this well. All of the snakes are clones, and some are even "perfect" clones or doppelgangers, but they still all make different choices and become different people despite genetics and similar circumstances.
Empathy is better because it's from the outside looking in, you don't have to empathize with every single aspect of a person's life to empathize with their current situation, that is a very robotic way of thinking about things.
You want to live as others for the sake of spice of life, not for empathy. You're probably just bored being you.