Srila Prabodhananda Sarasvati has stated (Caitanya-candramrta 5):

For a pure devotee who has realized Krsna consciousness through Sri Caitanya Mahaprabhu, the monistic philosophy by which one becomes one with the Supreme appears hellish. The mystic yoga practice by which the mind is controlled and the senses subjugated also appears ludicrous to a pure devotee. The devotee's mind and senses are already engaged in the transcendental service of the Lord. In this way the poisonous effects of sense activities are removed. If one's mind is always engaged in the service of the Lord, there is no possibility that one will think, feel or act materially. Similarly, the fruitive workers' attempt to attain heavenly planets is nothing more than phantasmagoria for the devotee. After all, the heavenly planets are material, and in due course of time they will all be dissolved. Devotees do not care for such temporary things. They engage in transcendental devotional activities because they desire elevation to the spiritual world, where they can live eternally and peacefully and with full knowledge of Krsna. In Vrndavana, the gopis, cowherd boys and even the calves, cows, trees and water are fully conscious of Krsna. They are never satisfied with anything but Krsna.