Ok I have to chip in here cause this is really getting annoying. How is having an acitve sex life equeate to fuckign around randomly with strangers? Really? So either I have no sex until I find the perfect someone and join the purity master race, or I am a raging manwhore out for anything with an available orifice?
Life is not just absolutes, most of us started having sex with people we liked, maybe even loved. It did not work out, cause we were young and stupid, and we keep trying, cause why the hell not? Relationships are hard, and for most of us, and I'd wadger most of the people who "save themselves", the first ones dont work out. Not only because the two people involved were not ready, but because people change, and sometimes they change to different directions, especially when you are young. There's nothing you can do about that.
Most people DON'T actually go get random one night stands every night. Dont let terrible TV series convince you that this is standard male modus operati. If sex statistics are to be believed, most men haven't even had a one night stand, and actually only had 4-6 partners in their lives.
Hell, come to think of it, I gotta ask, what's wrong with people who DO enjoy casual sex? For a whole group that emphasizes how sex is not that important, I call hypocrisy when you call such men disgusting. Much like I dont really find women who enjoy casual sex anything to be scorned or mocked.
So yes, you can have sex without being a manwhore, and you can choose to be a manwhore without being some sort of purity defiling skeeve. Dont use this argument as your defense from abstaining please.
As for the other bit, yes, male virgins are mocked because they are perceived to be less attractive, and thus successful, than males who can attract partners. Unfortunately for a rather sizable number of people who are actually asexual, or just abstain for other reasons, this is often, though not always true. It's not a mystery though, neither is it the least legitimate reason to get mocked at. No that's the women slut shaming, which is even more unreasonable, as it's based on the terrifying assumption that women dont actually want sex, they just kinda give in to it because they are so dominated by the hot hot mancake. Thus sluts are weak willed and are kinda peer pressured into it, or manipulative succubi who want your money, not just people who enjoy sex. Which is patently untrue. I am sure that happens some times, but actually, so does it with men.
Now ideally, people would just butt out and not mock anyone for such personal choices, but in a more realistic setting, I would suggest that the best reactions for the victims of this is to emphasize that its your CHOICE, not to rant on about how disgusting us sex starved pigs who dared to have more than one partner in our lives are. You are simply enforcing the stereotype of the sex-starved social outcast.
Now finally, to the poster with the no sex leading to breakups complaint, I must also add from personal experience my two bits to the you need to be clear about it up front camp. Most people wont tell you it's ok if you spring it 3 months in because they are dicks, they'll tell you it's ok because they are attached to you at this point, and they suppress their better judgement. They may feel that they'll try to suppress their urges, because they like you that much, or maybe they just hope you'll change. It's not the most mature outlook, but it's not surprising either. It really does not work out that way in the end though for the vast majority of people, as sex is an integral part of pair bonding. I am sorry to say this, as I understand you want to get close to someone, but unless the other person is also asexual, or has made a very clear and final commitment to abstain from sex, it's unfair to lead the relationship to a romantic direction. You need to be brutally honest at the first sign it's going that way. Which sucks, but it is what it is. Even then, you'll get people who are infatuated with you say they are ok with it, simply because they may not quite believe you, so you need to exercise your judgement there, and let there be no misunderstandings.