Something out of nothing

It drives me crazy this idea about how everything came to be. I don't think it is possible for human mind to comprehend how everything came to be, but conceptually there is something highly illogical about the state of affairs of the universe. I mean, how can something come out of nothing. I am agnostic when it comes to religion, but even if one were to believe in some sort of creator, how exactly did the creator came to be? The creator has always been there, that doesn't make any kind of sense. Science is not of much help when it comes to this idea either? Even if there are ten or eleven dimensions and this universe came out dimension of another universe, how did that universe, or the universe at the highest level came to be? And this are not pointless musings like human suffering, morality, role of government, global warming and all that stuff, because these are all things that are of a concern for beings that are going to live for such a short period. The possibility of end and of death is such a big source of these concepts and conflicts in the first place. Plus, most people don't think about the big picture. Something is not right. Something doesn't make sense.