I think most of us are addicted to sugar @theguruasia, it is more addictive than any other substance known to man, hahaha (I am not kidding). I think you are on the right track, staying healthy when young is like building a savings account. But none of us know even if we stay healthy through our life whether we will get sick or die in an accident. However, living a healthy life improves the quality of daily living so it is worth the effort in my opinion.