If our nearby system (star, planets, and all in between) is to serve as an observation parameter to determine the probability of the occurrence of life, life in

If our nearby system (star, planets, and all in between) is to serve as an observation parameter to determine the probability of the occurrence of life, life in not very common. Yes, it is true that you have plenty of life here, but you have it only on a very (and I mean very) thin layer on this floating rock. It seems a lot on the surface (pun intended), but it actually isn't.