A natural consequence
Of having just the right mix of ingredients, cooking temperature, and time. Statistically, this must happen elsewhere, given the size of the galaxy/universe.
As I mentioned earlier, I am fascinated at how life "terraforms" a planet. But it does it in waves, in fits-n-starts, sometimes the bio-products exceed tipping points, things crash, then build again. Evolving life can destroy itself then pick up again, both altered by and altering its environment.