Twilight - I think that OUR life systems are finely balanced in our part of the universe for US, but I would think that if the density was off, or the star was heavier, or some other of the 1000's of variables were different, then life would be different along those lines. If protons for example needed a heavy binding substance to hold together (as opposed the strong nuclear force which does not "weigh" anything) than I would assume our bones would be more dense and our skin would be shell, and we would be more horizontal and less vertical. Then you could say that the universe was finely tuned for life, again.
RMT - we as a species can barley think about what it is like to be another human. We can not even begine to fathom what it may or may not be like to be a cat, or a plant, or a rock. Do you know that an ant is not self aware? How do you know that a tree may feel sad when a chainsaw is ripping though its wood? You don't know that, and to assume that other living things do not have some sense of self awareness is close-minded. Santa Claus is a man made character. A fable from a story first told in Bavaria 100's of yrs ago. That has nothing to do with the consciousness of a true living organism. And besides, there may be a Santa Claus, or may have been one in the past. Stories change over generations and a good natured man giving kids toys in the dark winter may have slowly evolved into a story about a flying fat man. Does not mean that the character did not exist, only that facts were lost through translation.
If you believe that consciousness can not exist without a body, then you must believe that consciousness evolves out of mass. That is like saying that electricity can exist without a wire or battery. It simply is not. Even if consciousness is a continuum, than I would assume that the continued factor would move from body to body. An interesting topic, if you think that a male can seed consciouness in sperm, where it is then passed onto female to instill more consciouness, where it is born/hatched and continues to grow its own consciusness. That would explain memories of past lives being memories of people who you are related to. I'm not sure that software not existing without hardware is a logical proof that consciousness does not exist outside body, as a computer not being natural made, may not fit the definition of alive. Although the possibilities and ramifications of computers become self aware is an often explored sci-fi topic.
I think consciousness, when no longer part of a human body resides in the 5th dimension, which we as a species are unaware of at the moment. I think we will be enlightened soon .