Tantra

Man has a natural tendency to enjoyment, and does not generally welcome renunciation. He finds it difficult to call upon the Lord in a pure and simple way, and instinctively hugs to his bosom some amount of impurity in the midst of purity. Even through renouncing lust and wealth, he would like to have a passing glimpse of them. Hence it is that we find that immediately after stating distinctly in his sacred books that the worship of the Divine Mother should be performed in the purest way possible, he also makes room fore some queer sensuous songs in them on the plea that these will be pleasing on the Goddess.