First of all, it is pretty much impossible to rationally discuss the possibility of life on other planets without mentioning the origin of life or the evolution of species. Sorry to be blunt, but evolution is not a belief or an opinion, it is a well established fact. It is continuously being refined - Stephen Jay Gould's concept of punctuated equilibrium being among the more recent refinements - but it's as real as the earth is round. Anyone wishing to learn how the universe actually works needs to first put aside beliefs and opinions, no matter how dearly held, and start from the facts.