Well, that's your opinion. You may be the exception. I don't think it is sexist to state fact for most men though.
I wasn't saying it to be insulting, if that's how you took it, women need sex too by the way. Sex is a healthy thing after all, so it's not an insult and if you take it as one then perhaps it is your own distortions talking because I did not mean it in a way that is insulting and I don't begrudge men for wanting sex, or only sex. Many women just want sex as well. There is nothing wrong with it. We are sexual beings after all, and human animals if you want to get right down to it. If we didn't need sex we wouldn't be here.
Given the rampant sex trade that goes on, with mainly married men as patrons, I'd say that you may want to rethink your assertion. Obviously people who have had some kind of sexual assault occur in their lives will not be as keen, and have difficulties with sex in general, but for others who have not experienced sexual assault, it is not the case.
I work in the massage industry, and believe me, I see a LOT of males who come in wanting sex, and who want to pay for it rather than meet someone in the traditional way and give a damn about their feelings. Most of them are married by the way.
If you say you don't need sex at all, then you are either asexual or still dealing with issues from your assault, because we all need sex, even if past abuses prevent us from actually having sex. Sex is healthy. That doesn't mean that you don't appreciate women for other things, but sex is a part of any natural, healthy relationship. To say it isn't is ill informed.
I've been through times where I have not wanted or needed sex, but that was not for the majority of my life, and I think most people who have taken a break from sex would say the same. Eventually every person wants or needs sex, at some point. How is that sexist? It's in our make up as humans to need sex and physical closeness, intimacy etc. There is nothing wrong with that.