Sex may be always on a man's mind, but why is that a problem? We are designed to continue the species, and we do it well. If a guy is being disrespectful sexually to me, I unfriend him on facebook. Some men are disrespectful, in general, and say stupid shit. I'll agree with mixedmedia and say that the overwhelming majority of leering, etc that I have experienced has been irl, and the internet has been surprisingly devoid of it, because I can control where my content is and who is viewing it (for the most part).
As for rape, I've been raped. By 1 man. But the overwhelming majority of men that I have encountered wouldn't even want to have sex with me where they thought that I might be in any sort of discomfort, and the thought was a turn-off to them. Similarly, they've been very respectful about their advances (even on dating websites), and it's been a small minority who have not veiled their "I want to fuck you" requests.
Because I feel I am slightly more attractive than an average woman, and also am blessed/cursed with rather large breasts, I have come to expect that the majority of men would at least like to fuck me--and a lot would like to date me. But why is that a bad thing? I only feel bad that I am not attracted to more of them, and/or don't really want to go having sex with that many people. Otherwise, hell--why not?
Richard Dawkins got him in a similar mess arguing with someone about this subject recently:
Richard Dawkins vs SkepChick