The idea of God always existing

[Anomalocaris]

Try harder to follow:

All you are doing is assuming there is nothing causative much beyond the current frontier of knowledge about creation, and call some notional thing just beyond frontier "god", whereever that frontier happen to be at a given moment. I choose to call it the Big Bang, not assume there is nothing causative about it, so I won't be expected to praise it when I say it in the wrong company.

Also, our notion of time and causality is not truly well fleshed out in physics. So extrapolating on what may be at and beyond its origin seems a poor foundation upon which to build a world view.