Given billions of years to permutate? We already know for instance that multi-celluar life formed from a single bonding of a hunter cell with a prey cell, establishing a symbiotic relationship.
The odds of that happening in a given instance were astronomically low, but spread out across 10^30 cells and 10^33 of interactions per…an hour, across billions of years, it’s almost bound to happen at least once.
And just once, one “yes”, is all you need for chemistry and physics to take their course. Like a guy who keeps asking every women he meets for their number…
I don’t see why; we’re finding habitable planets all over the place in the last 15 years; even the solar system closest to us, proxima centauri, seems to have one.
We greatly suspect microbial life was present on Mars, and water is present on Europa and a whole other list of moons in the solar system.
There may be something unique to intelligent life arising, as we have not encountered anything that points to that (indeed, finding more habitable planets than we initially imagined, yet still no signs of other intelligent life, gives credence to the higher points of the “Great Filter” idea.)
And if so, so much the higher the importance of being good stewards of that life becomes. Human life shouldn’t be disregarded recklessly, because of how high the chance of it not existing is made clear in the final analysis.
Whatever your pains in life, you’re more likely suffering in terms of your own contrast to others that you see, not in absolute terms, where you’re likely living better than most humans who have lived throughout history.
… Even if you’re living in Haiti, Yemen or Chechnya, much less a 1st world nation where power and plumbing are conveniences you can take for granted.