I will prove to you that God exists

[Alan V]

One possible explanation for the apparent biofriendliness of the universe is anthropogenic multiverse cosmology.  Another is quantum cosmology, which Stephen Hawking developed because he wasn't happy with the multiverse idea.  "We learn from quantum cosmology that biological evolution and cosmological evolution aren't fundamentally separate phenomena but two vastly different levels of one giant evolutionary tree." -- quoted from On the Origin of Time: Stephen Hawking's Final Theory (page 259) by his associate Thomas Hertog.  In ways I cannot personally understand, quantum entanglement can create a holographic universe in which biofriendliness is an evolved characteristic.  But this is really a hypothesis rather than a theory at this point.

Quantum cosmology does not require the complexity of a whole other spiritual level to reality which theists prefer.  Their own hypothesis is anything but economical, since as you pointed out it goes so far beyond anything observable.  So again, theists prefer God-of-the-gaps arguments, regardless of how unlikely they are in the face of what we already know about the universe.

I mentioned the above book to Drew at the Atheist Discussion forum as well. Still, he keeps talking as if scientists aren't working on the problem of the biofriendliness of our universe, or as if God is really an explanation, given what we know about the universe. He ignores the assertion that the God-concept can be discarded for other important reasons even without considering the cosmological argument.

I am not impressed by the idea of a Creator who made the universe for life, but who required billions of years to evolve life, who made dinosaurs the dominant lifeform on earth for millions of years, or who made 400,000 species of beetles for that matter. How long has humanity been around, for a few hundred thousand years at most? That doesn't speak of any plan to me.