Summations Only

Just because the Big Bang was 13B years ago doesn't mean that the Universe began at that point.The Universe as it is now could be one of an infinite series Universes bursting forth in a Big Bang, expanding until heat death eventually shatters all the atoms into nothingness followed by a new Big Bang

I'm not talking about Bounce.Bounce would require contractions and if you look at my post, I don't talk about contraction.I'm saying that once everything has been completely torn apart down to the subatomic level by expansion, the "end" Universe will be indistinguishable from the "start" at or before the big bang.We talk about an expansion of space/time, but space/time only exists so long as there are detectable objects within "space/time".An "empty" Universe lacks "space/time".

You don't have a firm grasp of what the term "infinite" means.The series of whole numbers is infinite.
It goes on FOREVER.
It, however, has a start point.
It also contains differences. The number 2 is different than the number 3.The Universe can have a start point and can contain differences and still be infinite.

And since the Universe is an endless series, it is not finite.Science 001. Wrong. You've declared that the universe if finite based on criteria that you've made up.We've given you examples of things which are infinite which you have not addressed. Your criticisms of the Universe are no more valid than criticisms of number sequences. That makes your religion invalid, you realize that right?

We talk about an "expanding universe" because we can see objects moving away from us at an increasing rate in all directions. That's because space itself is expanding.We assume that the "edge" of the big bang back ground radiation is the "edge" of space but we can only judge space if there is an object to measure."space/time" becomes meaningless when there is nothing detectable within space time.The ever growing expansion that we are witnessing will ultimately separate all matter. It will take a VERY long time to do so, but it will happen.Once everything has been broken down to atoms then to subatomic particles, then to whatever is smaller still, the Universe will be "empty". Nothing will be detectable.At that point space/time ceases to be a concept with any value.A trillion trillion trillion years could pass and nothing would occur.So, if, as some suggest, the big bang is the result of colliding membranes and these collisions are exceedingly rare, it's just a matter of time within the endless void of no change before a new Big Bang is triggered and a new "universe" is created.Technically, that new Universe is within the existing universe, but it would be impossible for the life forms within that new Universe to detect or measure anything happening in the "old Universe" into which they are expanding.We _could_ be the first Universe.
We _could_ be the ten millionth Universe.We'd have no way of knowing.