Angelina I feel a very noticeable change in mood before vs after masturbating. I am usually much happier beforehand, and while the experience is fun it also has the cost of feeling down afterward. Other than experiencing some serious frustration with horniness, I think I maintain an overall much happier state without masturbating. Normally without my belt the frustration results in giving in, but the belt helps me continue.
I know there's a commonly cited study that indicates men have lower risk of prostate cancer if they masturbate regularly. When I looked into it, it was only in category of men who masturbate more than once per day if I remember right. The other categories saw no correlation with decreased risk. That's a level I simply have never been at, so if that correlation is correct it doesn't apply to me.