
Torah embraces the beauties of this world and exhorts man to serve G-d in this world by cleaving to the middle road, avoiding excessive piety and asceticism no less than impiety or hedonism.
The additional restrictions adopted by the nazarite, for a limited time only, are best not done so as an act of piety for its own sake, but as a spiritual corrective intended to redirect the nazarite back to the middle path, the golden path, the way of moderation.