Dealing with solipsism is your problem, if you exist. :) But let me give you another answer, solipsism is easily testable, each of us can test it for himself, regardless of the possibility that maybe other entities are not real. Fastest would be to stop breading, if you hold your breath long enough you will find out. But let’s take less harmless test, fire the matches and try burning your hand. Does it hurt? Probably, at least in my case it hurts, and I have memory it does. That means that regardless of the fact that you are only “real” being, you will still experience everything exactly as everything is real, you are bound by the laws of this world or the Maya (Illusion) how Hinduism teaching call’s it. Meaning even in the case that all people around you/me are puppets they can still hurt you/me. Now real question is this: by testing and learning rules of the world, what are you going to do with your time here?