I don't know if would say there isn't life on any of the planets in our solar system. We just have not detected any with our extremely limited exploration, using our extremely limited devices. I like to believe that we humans cannot possibly fathom Truth - religion or scientific.
My personal religion considers the universe to be a whole, so any intelligent life - or unintelligent life for that matter - would come from the same source. "They" might have a leader such as Jesus, Moses, Mohammed, etc, who trys to explain their purpose and other worldy things in 'human"...
I was considering all the religions and their respective issues and realized that all are clearly interpreted by human goals and fears - goal heaven, fear hell. Even when I consider reincarnation, which I believe in, it generally states that you are good and get to be free of earth or bad and...