Makes ya go blind

"Research by Arvalea Nelson indicates that consistently orgasmic women tend to describe themselves as contented, good-natured, insightful, self-confident, independent, realistic, strong, capable, and understanding while non-orgasmic women tend to describe themselves as bitter, despondent, dissatisfied, distrustful, fussy, immature, inhibited, prejudiced, and sulky."

Yes, this is proof that you should get off as often as humanly possible. Not that I needed to be told, but a little scientific backup is always nice :)