[llccbb]

Big numbers don't "guarantee life", rather they make it "very unlikely there isn't life". It is the same way that "an absence of evidence is not evidence of an absence".

Secondly, it remains a challenge to categorize and define the envelope for what is and isn't "life". We have a decent hold on "earth-like life" but it will not be sufficient for all that might be encountered in due time (or already exists unbeknownst to us). If you have ever defined an ontology you know that it becomes more and more challenging to put definitions to the universals as you climb up the ontology. At the top, the universal from which all other universals inherit is very commonly left descriptionless.

Last, there are many alternative to the Christian One-God view that you express (I am sure you are aware and chose to limit your points for brevity). There are spiritual books that explain/propose/posit the universal disconnect between the living conscious beings of Earth in this material plane and the myriad of "beings" that exist in other higher dimensions/levels/shells.

[ythn]

"very unlikely there isn't life" == "very likely that there is life"