Imagination and attachment are important factors in human society. Yet, their impact on the lust and desire aspects of human pursuits can be a huge distraction. Establishing awareness of thoughts can help one to navigate and assuage any gravitation towards overt sexual tendencies.
Nonetheless, I pondered his statements and it drove home the fact that (many) people (westerners) are socialized to view meditation with a HIGH Degree of circumspection. Meditation and meditating is mentioned 23 times in the (KJV) bible. Yet many still (choose to) remain ignorant as to what meditation really entails
Ab-Sutra Wellness and Fitness 