Everyone has a vice of some sort or another. It is the curse of this human existence. We're born with the natural inclination to eat too much, drink too much, to drug ourselves out of rational thoughts, and otherwise escape the mundane. The lucky and responsible people learn to overcome their addictions.
Breaking the cycle of alcoholism in my family, I have chosen to abstain entirely. Therefore, my body seeks to satisfy itself in other ways. Plain old sugar is my sweet addiction, one I will continue to battle for the rest of my life, but it beats being drunk.