big mystery

How did something come to exist? That's probably the biggest mystery ever. If we say that universe was created by collision of some two objects, then how were those two objects created? Anyway, at the absolute beginning, there had to be absolute void, because if anything existed, then it wasn't absolute beginning. But then if nothing existed, then what caused something to come to existence, when there was nothing? As there was absolute void, so there was also no reason for anything to happen.

you should look into the biocentric theory. consciousness came first, and then perceived  a world in which it could live in. bang. the consciousness was always there, but not until it became aware of itself did create a world.