No planet is more earth-like than Earth itself, so if life really does pop up readily in earth-like conditions, then surely it should have arisen many times right here on our home planet? And how do we know it didn't? The truth is, nobody has looked.
“Be like a duck. Calm on the surface, but always paddling like the dickens underneath.”
“Social security, bank account, and credit card numbers aren't just data. In the wrong hands they can wipe out someone's life savings, wreck their credit and cause financial ruin.”