i once read a theory that says (i havent checked the validity of this claim) the time required for dna mutates and evolves to the current complexity on earth predates earth by a long shot so it assumes that at one point after the big bang everywhere on the universe is basically a habitable zone and life can be practically found anywhere. assuming some of the building blocks keep on arriving on optimal condition later on.
my job is basically design and manufacture, the dependencies of 3d printers make my job wouldnt exist 10 years ago.