Like I said you will never ever come to the truth through your scientific tools of seeing touching and feeling. Those are elements of this physical realm we live in. The answer to your quest to understand why is there always something else where something else came from is rooted outside of this physical real. Questions like where did we come from? Why are we hear? What is the purpose of Life? What is right and wrong? What is Good and bad. Those are all internal quests of a searching soul for answers. Those questions can not be answered by a scientific calculation.
Your quest for how did all this come to be. Where did it all come from? Is evidence of the desire to seek and know the creator which he by design put within you. Its a spiritual Journey not a scientific journey that will lead to the truth of where all this came from. There is a scriptures that says Heb 11:6 But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him. That reward is him revealing his Majesty to you.
Yea I know Jargon language to you Yea I know no empirical evidence to support my claim The scientific way.
But none the less Death will come to you. You will succumb to it. You will be no more. You will be forgotton and never be remembered again. Your life is a temporary existence. Those of us who know the Majesty on High seek an eternal existence. Where the Majesty shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away. Rev 21:4
That can not be attained through science