Why can't chocolate and cigarettes be saved?

What do you mean, does it mean that one can't love chocolate and cigarettes at the same time?

If we can see a person's personality from hobbies, chocolate should represent fashion, sweetness and happiness, while cigarettes represent sadness, cold and loneliness. These two personalities are opposites. It is impossible for a person to have these two kinds of psychology at the same time, and it is impossible to fall in love with chocolate and cigarettes at the same time.