What if the Earth was never terraformed but always meant to harbour life?

The Drake equation posits that there is a 1 in 60 Billion chance of a technological species ever existing on another planet that happens to be in the habitable zone of its star. You expand this with the odds of a planet even being in the habitable zone of its star (at least based on an earth-like planet) and it becomes even smaller.

For a star system to have 2 planets capable of supporting life on them, both within a habitable zone and both having supported life at some point in their history (which at this point is a given for Mars, even if it was just microbial) is next to impossible.

Which then raises an even bigger philosophical question: is life inevitable? Like plant seeds eventually finding the cracks in a concrete city maybe the idea of panspermia isn’t so far fetched. We say we need organic compounds for life to have began but life is also home to plenty of inorganic compounds. We have iron in our blood (that does an important job) but you wouldn’t start looking for iron as a sign of life. Maybe we need to widen our parameters?

And to go one further, if life is inevitable and has sprang up and down untold times over the millennia of the universes’ assumed lifespan then the universe has an inherent purpose which is to support life.

And if the universe has a purpose? Well, that opens the door to some even bigger questions.