The above comments are all well said. The desire for sex is relentless and fantasies augment it. Most of us do not have the wherewithal (financially or emotionally) to realize these fantasies. Is there an alternative? In my own case, I have found that Tantra meditation can enhance the fantasies to the point that they become very real as a sensual experience. Imagining a sexual activity becomes as real as the real thing. So I don't "need" the real thing. I can enjoy whats in my mind. Love is in the mind.