Your beliefs are not supported by anything other than an old book. Shit, Newtons theories of gravity have more evidence for them than your boom of fairytale and we’ve still discredited them. Regardless of the prominence of belief in the Christian God and its pervasiveness in western culture, that does not mean that morality does not exist without God unless you come at it from a specifically platonist philosophy. And therein we see the problem: your subscription to one form of ancient philosophy and denial that other ways of thinking even exist.
I also know that history doesn’t make metaphysical claims about the nature of the universe and concepts such as morality. Science is our best way of understanding the world, not voodoo. That’s why I mentioned gravity.