i dont and i've never been with a guy who does. that doesnt mean its a bad thing. sweat on its own can be hot- it shows that your putting your full energy into it. unless you start to smell bad, but then again, there are other men who would actually like the odor. so its all a matter of meeting the right guy. a sweaty banging would not offend a leather daddy. if you're going after the Abercrombie n Fitch type, then maybe it would be an issue.