Your minds are open, but could be more open. Life doesn't have to be limited to what we know as life. Life could be formed in ways we couldn't dream of. What we have, DNA, cells, carbon-based, oxygen-requiring life, that's what we know as life. That stuff is all incredibly complex, especially to be created by a natural environment, and the chances of the same things, the same complexities, the same details of life occurring is insanely small (probably maybe). That's why I think that all planets could hold life, just not the life we know and are used to. Of course, I don't think all of them do. That would be preposterous.