Hmm...I've gone months, even years without masturbating and I think there is no discernable difference in motivation levels whether I'm masturbating on a regular basis or not. Additionally, I find masturbation on a regular basis makes me more relaxed and less stressed. Who says it's going nowhere? It certainly gets me to a pleasurable place.
As to it being bad for the body--if it "probably is", we would have seen peer-reviewed studies long before now saying so. However, what we have seen is precisely the opposite. Studies have shown us that masturbation on a regular basis lowers a male's risk of prostate cancer.
BBC NEWS | Health | Masturbation 'cuts cancer risk'