Ecstasy results from the wisdom of emptiness, of seeing the impermanent, insubstantial nature of all phenomena, where there is no clinging, no attachment, and no fear. In this experience, we become one with the unfolding process of life. This oneness is quite subtle, because it is the oneness of becoming zero.
If we are designed to be in communion with God, if God is our Lover, then we have to indulge in the things that lovers do. The lover wishes always to be in the loved one's presence, to gaze and behold. The name for this loving regard is contemplation.