It's true that the fact of there being no empirical evidence for the existence of a supernatural being in the universe does not mean there is no such being, however it does greatly reduce the probabilities. Even if you don't accept the probability argument, there is nothing that suggests to me an intelligent element to the universe beyond human beings so I base my life as if there wasn't. There is no evidence of intelligent life on other planets and I live my life as if there arent (I don't assume there are and don't make up characteristics of what they might be).