Why shouldn't stuff be allowed to spontaneously come into existence? Why should there be any rules at all to begin with? If there is truly nothing, then there i

Why shouldn't stuff be allowed to spontaneously come into existence? Why should there be any rules at all to begin with? If there is truly nothing, then there isn't any rule to force the nothing to stay nothing. So the question becomes "how was the universe chosen to be this way, rather than some other way?". The choice must be made, but there is no objective reason to prefer any option over any other. "Nothing exists" is a simple answer, but simplicity is not objectively preferred. I think the presence of this subjective choice forces a subjective experience into existence with the free will to decide it. Though I haven't a clue how the characteristics of the experience are chosen - that's also a subjective choice. It's subjective choices all the way down.