This is known as fatalism, and included in this is the clearly false belief that we as individuals have no power to influence our future nor the outcome of our actions. Life is indeed short, but this is not a justification for nihilism, a mistaken belief system that is ultimately harmful to the individual and society. We need all the help we can get, and the Universe will be poorer and less interesting without you. So please consider sticking around longer and effect this by treating yourself and your body better. Undoubtedly there are those that love you and that you love, and you have a duty to do so to yourself and them, at the very least.
