If the sex drive were taken away from you, you would see that you had lost your greatest friend. You would lose all interest in life. Sex was given to make you strong. If a boxer were to fight only weaklings, he too would grow weak in time. It is by fighting strong men that he develops strength. The same is true in your struggle with the sex instinct. The more you master it, the more you will find yourself becoming a lion of happiness.
— Swami Kriyananda, The New Path (In the chapter on Renunciation)