An inifinite regression is a logical impossibility as this would mean there would be an infinite number of events between any two events. This would mean you would never actually reach the next event. This would also mean that between any two events there would be an inifinite time frame.
This is obviously not seen in reality. Let's take energy changing from kinetic to heat energy as an example. If an infinite regress was true this would take an I figure number of changes before kinetic energy turned into heat energy. This would take an infinite amount of time and therefore, the kinetic energy would never manifest itself into heat. Since in reality energy does change forms we can conclude there were a finite number of changes of energy and therefore there cannot be an inifinite regress.
Regarding the Flying Spaghetti Monster argument some people have posed. That is stupid as it would be made of spaghetti I assume. One of the laws of thermodynamics says energy cannot be created nor destroyed it can only change forms. Matter is a manifestation of energy. So this also applied to matter. Now consider we cannot have an infinite changes of firms as an infinite regress cannot exist as demonstrated earlier in my post both matter and energy must've been created.
Whatever created matter and energy must pre exist matter and energy. Therefore, it by definition must be immaterial and infinitely powerful (created energy from nothing). It must also be inifinite as it created time (as if time was truly infinite the time within any two events would also be infinite, however there is a finite amount of time between yesterday and today for example and therefore time must be finite). It must be omnipresent as it also created space and is therefore not restricted by spacial boundaries (Big Bang theory suggests there was no space in the singularity). I think I should clarify energy beyond created means the Big Bang itself cannot be the ultimate first cause.
Therefore, through pure logic an infinitely powerful, omnipresent, eternal creator of the universe exists. This creator must also be persona (so it can therefore make choices to affect the reality it's created and so therefore listen to prayers for example) Why?
Because an infinite being cannot causer something finite unless it chose to do it at a particular point in time. If it was a necessity rather than a choice than its creation would also be infinite. But as we can see the universe is not infinite through the logical steps that I have pointed out as well as scientific evidence backing this (Big Bang theory).
So we have infinitely powerful, omnipresent, eternal and personal creator of the Universe. There must also only be one God because two beings can't have exactly the same characteristics and the same spacial composition. Since, we therefore can't actually differentiate the two identities then it must only be one identity that exists. For example if I said there is two cans of Heinz baked beans on my table in the exact same 3D coordinates and look exactly the same you would say that's impossible as there is nothing to differential the two baked beans so there must only be one can of baked beans.
So in conclusion, we have one being that is infinitely powerful, omnipresent, eternal and personal creator of the universe. That sure sounds a lot like the God mentioned in the Abrahamic religions.
Remember all the characteristics of God can never be proven as life is a test and if all of Gods characteristics did end up being proven then that defeats the purpose of a test to an extent. We need some sort of faith. But remember this isn't a weakness everyone needs faith to some extent. Scientists need faith in the scientific method for example.
But even if we look at pure logic the evidence clearly points to a God creating the universe than any other alternative. I apologise for my red for being so long but that are my thoughts on this topic. I hope I have opened some people's eyes a little bit. Even if one person reads all of this and changes their opinion on this then it was worth it.