@Dunnbeatable,
Quote:Organic life is here as earth fertilizer.
Unless your meaning this in a metaphysical sense, this is the equivalent of asking 'why must we eat?' and answering 'because we excrete.' It's backwards. You cannot 'fertilize' the earth for it's own sake, because it doesn't have it's own sake. The earth is not an entity that needs fertilization, it is simply a sphere of atoms drifting through space. We might have just happened to be placed on the earth and our decay creates it's fertility, but seeing as all matter in our bodies can be found on earth, the laws of matter state that it must have been fertile in the first place for us to come into being, rendering us redundant.
I hate the term 'The Meaning of Life.' As if life is supposed to signify something, like a word in a dictionary. You seem to be really asking 'What is our purpose in life?'