It’s Turtles All the Way Down - the Infinite Regress Problem

Those who propose an infinite universe, what do you do about the problem of an infinite regress of causes?

In other words, a series of things that are each ontologically dependent on the next; in this case, the singularity, the singularity -1, the singularity -2, the singularity -3....

How do we reach the singularity if there is an infinite/endless series of causes?

For example, if a giraffe had an infinitely long neck, he would die of starvation - even if he had eaten for an infinite amount of time - since the food would always have another inch to travel before it reached the stomach. So this string of infinite causes would always have another casual step to take before the singularity happened.

To say that "that there is no first moment, because every moment is preceded by earlier moments" is to be logically and philosophically hanging in midair.

Christians would say that God is a metaphysically necessary [efficient] cause for the material universe, thus avoiding regress problems.

Infinite regress can be a problem because it can lead to answers that never terminate. When people ask for justification for something, they want an answer that is compelling. However, answers that result in an infinite regress aren't rationally compelling

It’s more logical to believe in an uncreated Creator/cause than a created one. Why? Because If God had a creator [or a cause had a cause] who brought Him into existence, then we could ask “who created that God?” 

Ockam’s Razor - the philosophical principle used in science that suggests you shouldn’t multiply causes to explain something beyond what’s necessary - would suggest that we not have a regression of creators at all. The one who brought our universe into being is the uncreated one.

This isn’t special pleading for God. This is what the atheist has typically said about the universe; that the universe is uncreated and eternal in its existence. No atheist was asking “Who created the universe”? They thought the universe was “Just there,” that it was a brute fact. Although that conclusion is now invalidated by powerful scientific evidence and philosophical arguments.