What I am saying is this: without a beginning, life on earth could not have happened. And, as the theory goes, life on earth could not have evolved without a start of life. (abiogenesis) Scientists say humans came about by means of evolution. A beginning of evolution is necessary in that case. Further, I don't think gorillas wonder about that, although I am thankful no gorilla or chimpanzee has told me about that.
Although what is called by scientists apes have. I don't like science fiction too much so not going with the Planet of the Apes much.
It is absolutely and obviously essential to the theory of evolution that life began somehow, somewhere. That is called abiogenesis. Without it, life by the means of evolution as considered by many in the realm of science could not have happened.