who am i?

I don't know how to feel, I feel or think that I am in the world for no reason, everything we do has no impact on history or anything, it makes no sense for us to be here, I mean, why? Why are we here? Our existence has no meaning, it is as if God or someone had a whim or a delusion of possessing something and knowing that they have power over that something. That can make him happy and also make him suffer until death, like a child with a toy, it is cruel. That means that I don't know who or what I am, there are times that I let people decide who I am, it's like "look and approve", let it be left to free perception.