What is the point of being reincarnated if you have no idea what or who you were in the past life?

I think that is a belief that makes people sleep at nights...but do you really think that being reincarnated is a good thing..IN my opinion it is the same as you not being reincarnated, because you have no idea of your past life, how you lived it. you have no memories, or anything? so what is the point to believe you are some reincarnation, reincarnation is the same as you not being reincarnated, the human conscience focuses on that which it understands and can comprehend, so it is hard to believe you once had a life that you somehow can't remember....who invented this concept of reincarnation?