live4him,
Second, the only truly closed system is the universe. Thus, this would be the only applicable system to the Laws of Thermo. This, therefore, invalidates your position.
If the big bang is just one of an infinite number of concurrent big bangs in a universe with infinite size then that satisfies a naturalistic model. The issue of a closed system cannot apply since something with infinite size has no boundaries and therefore cannot be closed.
Given the valid possibility of an infinite universe then this must also have a positive probability, especially since we know the universe already exists, and we don't know a god exists.
We also know that something with the property of infinity must also exist otherwise nothing could ever have begun.
Given that an infinite universe is probable and that something infinite must exist, and that the universe definitely exists, and in the absence of any evidence for anything supernatural then that lends increasing value to the probability of a naturalistic solution.
Also, given that the primary function of an omnipotent god is that he is the creator of the universe then we can see that if the universe is infinite and has therefore always existed then the need for a creator god is eliminated. This seriously reduces the probability for the existence of a god.
I see two possible scenarios -
1. Infinite universe that eliminates the need for a god.
2. Finite universe created by an infinite god.
This indicates 3 factors to consider as a probability value -
1. Infinite Universe.
2. Finite Universe.
3. Infinite God.
We know that infinity must exist so that favors 1 or 3.
We know that the universe exists so that favors 1 or 2.
We have no evidence for gods so that eliminates 3.
If 3 is eliminated then that also eliminates 2 since infinity must be present.
We are left with an Infinite Universe being the only acceptable probable solution.