I personally believe that universe has always existed or was created way before big bang, and that big bang was merely the creation of the planets, stars and galaxies closest to where we happen to live. As such, there's no "something coming out of nothing", which I too think is a pretty unfounded, ridiculous and unscientific idea lying behind the traditional big bang theory. Following upon the creation of earth by big bang, it's not difficult to trace all the steps of evolution - from the evolutionary fight between molecules, a very special form of half self-replicating molecules evolved, then developing into becoming better at self-replication by entering capusles to bring with it helper molecules for the task, then creation of advanced cells, and after that multicellular organisms evolving as cells merging finding an advantage in doing so. Every step of the chain has a clear causality and every change has a cause. However if something came out of nothing, then there would most likely have needed to be an outer stimuli in my opinion, an outer force of some kind or another. Which IMO makes the big bang theory, unlike evolution, religion.
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