One for the unwavering atheists…
If God doesn’t exist, then how do you explain the presence of the universe?
NB: You cannot start your theory with an imaginary “big bang” unless you’re prepared to explain how and why this “bang” was triggered. For example, if this “bang” was a release of mechanical, chemical, or nuclear energy, then you must be able to explain WHERE the necessary elements came from, and WHAT triggered this ignition.
If you cannot explain the presence of the universe, then you’d be well advised to tone down your atheism until you are better informed.
Regards, GR.