science

Well, the building blocks of life are far from being life. It's like finding bricks and randomly a building appears. Sure, given enough time, samples, and agitation, it'll eventually happen. It's far from saying that if you find bricks you should expect to find buildings though. As far as we can tell, even on Earth, all life has come from one source. They all share common traits, yet we have even further developed building blocks for DNA and RNA. Hell, we have actual DNA and RNA floating about.