>>19644
No they don't, nobody wants cancer.
It's also important for governments and such to thing about and act on for the betterment of their nation and their health systems.
That being said, correlation does not imply causation so it might not be that refraining from masturbation is causing prostate cancer, it could be that there is something else that causes people to refrain from masturbation that increases the rate of prostate cancer or that people with prostates that are more susceptible to cancer have a reduced desire to masturbate.