Purity of being is at the heart of most relegions mate.
Sins taint the soul, and are purified in repentance. Good and holy deeds bring one ever closer to the ideal of purity and oneness with the divine.
Emulating the character of the pure is height of moral good, To have mastery over ones passions and vices and to live a pure life.
To hold that will/life is sacred and pure at its core, and that snuffing or tainting it is vile.
To hold the arts as as a window to the divine, to have food become part of intricate ritual, for certain passions, such as love to be held in supremacy.
For fashion and aesthetic to develop into idolising what nature hath given, and but work to enliven it.
All these and more purity can evolve to.