Western culture has gone the way of indulge and do whatever you want as long as you are not hurting anyone else. Most males of our society have become geldings through over indulgence and over stimulation. I think mankind has lost it's manhood through lack of discipline over itself. Through personal experience I have found that retention of sexual desire (not suppression) to be very beneficial. These energies can be redirected and channeled into physical regeneration and into the improvement of ones personal and social life. The ejaculate is pure creative energy and the basis of virility. As other posters have stated it takes enormous amounts of energy to replace what we dispose of. Also, just by practicing discipline in this area of your life you will find that you have power to discipline other areas of your life. Try this. The next time you go out to a social setting and make eye contact with a woman, make a note of who looks away first. If you do then you have work to do. It means that something inside you isn't comfortable and you're afraid and you're not dominant. If she looks away but then looks back you're in business. The sexual pecking order is almost completely hormonal. Men with lower test levels tend to exhibit submissive behaviors and hide in groups. Men with higher test levels are usually the "leader" of the groups and tend to get laid more often.
I tend bar at a big night club and I'm also a psych major. I observe this stuff almost everyday. Most women prefer happy, confident "dominant" men. If one can overcome his immediate desires and become the master of himself, then he can assuredly become the master of his world.