How do you interpret the first chapter of Romans? v20: For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made.
It requires no faith to believe in a creator, only logic. The physical universe began a finite time ago because an infinite causal chain is absurd. The cause must have been nonphysical and atemporal, or there would be another cause behind it. The universe did not have a blind mechanistic physical cause, so it was intended by some sort of intelligence. It is logically necessary to believe in this powerful, transcendent, intelligent Being.
First, we already addressed a variant of this argument earlier in the thread.
Second, we already addressed this argument a thousand times on this site.
Third, no, it has not been proven that the universe did not always exist. We can trace the timeline back to the origins of the Big Bang, but we currently cannot go any further; quantum mechanics starts to take over and our current models begin to break down. Time and space may have indeed simply started at this point and we are seeing the beginnings of reality. The original cause shortly before the beginning of the Big Bang was the uncaused cause, always primed into motion and creating everything, including time.
We are also treating time as a single mechanical line that behaves constantly the same way. This may work for life on earth, but once we start stretching into larger and larger physics this idea quickly turns out to be false.
Fourth, how does adding another link to the causal chain and declaring this cause to be nonphysical and atemporal though special pleading help solve the problem of the infinite regress? If I can arbitrarily designate anything I want as the first cause, what's stopping me from picking something else as opposed to your specific being?
Fifth, was there any instance when the universe did not exist, i.e. was there a time before time?
Sixth, does this being have thoughts? If not, how can it be intelligent? If it has thoughts, then what caused those thoughts, and what causes them to change.
Seventh, how does an immaterial mind produce anything and influence anything outside of itself? Unless you want to go "special pleading", there really is no imaginable way for this to happen.
Eighth, why can the cause be a blind deterministic immaterial cause without intelligence?
I can easily go on. The cosmological argument is weak and tries to use poor philosophy to argue God into existence. In short, it cannot avoid the philosophical problems of God without validating other possibilities. You can't argue for atemporality without simultaneously allowing other causes to fill God's place as the atemporal cause.
P.S. If it feels like I rushed through and did not go into great detail, it's because I'm tired of writing novel-length answers that deal with every possible response before the response comes up. I would rather deal with the specific response.