I think that the sperm exostion is the red herring to this discussion. there are alot of effect that sex/masterbation has on the mental aspect of training and fighting. No1 you lose focus, and if you give into this indulgent, your possibly backsteping your training, there are very little good things that can come out of your pupal getting sex"from a trainers point of view. I know that if you can deprive your self of sex and goofy stuff for a few days, you actully dont miss it too much.
Just like drugs and ciggs sex releases dopemine chemicals to your body that can cause a good, calming feeling" and its extremly easy to get addicted too.