Well, perhaps not as often. I'm married and I regularly masturbate to keep the pipes clear and get rid of idle sperm, much like you'd urinate or defecate. They're produced all the time and just sit in the gland waiting to be sent on their way. They are busy little guys though so the prostate needs to be emptied regularly. No point in having all those little guys causing trouble in the prostate.
Since the wife is not interested in sex any more (for various reasons), I have to do something with the sperm so out they go