“Therefore, explain why a wise person shouldn’t get drunk – not with words, but by the facts of its ugliness and offensiveness. It’s most easy to prove that so-called pleasures, when they go beyond proper measure, are but punishments.” Seneca, Moral Letters.
Too much of a good thing becomes bad for you. At what point do you realise that – just in time or before it’s too late? Doing without that pleasure entirely for a short period can help restore some sense of balance and perspective, which is generally what has been lost when we over-indulge. Prevention is better than cure; having a break is better than reaching for hair of the dog the morning after.