Whether the universe has been around 'forever' or not is irrelevant, really .. our observations however show that the universe is continually expanding which suggests that there was some sort of beginning
The expansion of the matter within the universe does not preclude there also being contraction. I see this posted all of the time in argument that there "had to be" a beginning to the universe. Do you realize that you, yourself have gravitational/force ties to the matter that exists in galaxies completely separate from our own? That there is attraction there, however minute, and ALWAYS will be, according to the immutable laws governing the universe's existence? The reason that this is significant, to my mind, is that, given (literally) infinite time, there is no way I can see bodies moving away from one another infinitely. Eventually, large masses will coalesce and bring about huge gravity wells that will reach further and further outward into the universe, pulling at everything - slowing down the mass that is out there pushing outward, until finally it too is being reeled back in. And what if the ultimate contraction of most of that matter results in a cataclysmic realization of "critical mass" - at which point it all explodes forth again in
another expansion. A process we can never "observe" because it takes trillions upon trillions of years - not to mention the fact that it would inevitably result in the destruction of our planet and billions of others - though Earth would have met it's demise LONG before the event anyway.
Not at all! God is not physical, and does not 'require' a beginning .. mankind struggles with infinite concepts, but that doesn't mean that they don't exist
If I were the kind of person who used emoticons/emoji, I would face-palm here. I just posited an "infinite concept" when I stated that I believe that the universe has always existed - to even hint that I don't believe in God simply because I "struggle with infinite concepts" is asinine at that point.