There's a difference between life forms that can survive a particular environment, and all of the phases of incremental steps towards forming the first life in

There's a difference between life forms that can survive a particular environment, and all of the phases of incremental steps towards forming the first life in such an environment. There's nothing to do but speculate until proven otherwise, since we don't actually know what those steps exactly are. My personal suspicion is that we are more likely to find life in earth like conditions than anywhere else, though.