My heart stopped for 10 minutes as my forehead was being sutured under a general anesthetic following a car accident in Kenya in 1980, erasing my abilities to walk, speak, remember, and all the other skills that we learn after we are born! I recovered those abilities by staggering, walking and jogging the 3.6 miles home from my first job 92 times, and amused myself by considering how we might live through the next million years as a species on a planet with distinctly finite resources.
Please email me for further conclusions about how we might transform all of our activities into those that are 100% sustainable, while we still have the time and resources to do that!
After all the petroleum and coal are gone, and climates irretrievably warmed, we will no longer be able to support populations that have multiplied 17 times since the beginning of the Industrial Revolution, and 4 times in the last century alone!
The Big Bang Theory comes from the fact that the visible part of the infinite universe IS EXPANDING, which accounts for the fact that our planet has not suffered the bombardment that a planet in a contracting part of the infinite universe would inevitably suffer.
So, yes, an Infinite Universe implies that there are an infinite number of individuals with identical birthdays on identical planets, as well as an infinite number of species that are currently beyond our wildest imaginations!
There is no beginning or end to the lives of the components of the genes that both make and link every one of us, and we bring harm to the environment that supports all of us at great peril to those components, and the descendents that we/those components give rise to!

Kim