A great topic for late night discussions among friends....
Humor me here for a moment if your will....
Everything in the universe (that we know of) is made up of stardust. Literally everything...no exceptions. Exploding stars provide the material for you, me, Aunt Joan, and Dusty my Dog. His poop too....

Everything we eat,,everything we see and all we don't is made up of remnants of exploded stars...
Ok...that's pretty much physics as we understand it and I'm the first to tell you that may change tomorrow...but hang in with me for a bit more...
The Big Bang theroy states that all the matter in the universe at one time condensed to a millionth the size of a pin head,,,,then exploded...which over a few billion years of cooling and condensing...viola..we have our present universe....More modern Physics..widely accepted but with new theories appearing all the time...
Now many physisists believe this has happened before...many times..an infinite number of times actually...
Infinite is big...bigger than I can imagine,,but I do know that it means that anything is possible within the infinte...
So lets say that that is true... and I am made up of a few hundred trillion bits of stardust that came together in this infinite we are talking about..
Now let's imagine tossing 5 dice on the floor an infinite number of times...
Do you think they would land exactly the same way at any time.?..Of course they would..actually they would land exactly the same way an infinte number of times if we were to toss them an infinite number of times...
Get were I'm going with this?
If we follow the logic,,,then the universe expanded and collapsed an infinte number of times and my particular mass of startdust came together just like it is an infinte number of times..and yours did too....just like the dice....
And if so,,,then I have typed this exact post an infinte number of times....and typed it differently too...
Now that is a different story....
Thank you for humoring me....
Lenny