First of all, you're the first person I've seen with a religious view about hating a sin and not the sinner. To begin, thank you for being that way. I hate it when people single out people because of one bad thing they do. Which kind of also answers the question of the topic.
I think it's ridiculous to single out men simply because of a few bad deeds that some of them have done. My philosophy is if at first you don't succeed, try again. You'll find someone who's worth your time if you keep looking and not settle for anything less than what you deserve. I think part of the problem is some people get involved with random guys due to some small fleeting feelings and things turn sour. So it's easier to blame a gender as a whole as opposed to admitting that they made a mistake in their own actions of being with that individual. It's completely unfair to everyone else who may be interested in them aswell.
If we're talking about sexual abuse at a young age, yes that is a terrible no-no. I can see how that would have an effect on people. If that be the case, I would think it's more along the lines of fear than anything. Put people have to understand that they have no control over what happened to them. One person made a horirble mistake and usually, that person carries the guilt of their actions for the rest of their lives. It's not something to really single out mankind over. Really, it's something that people have to get around. I'm not gonna say much else for fear of sounding cold hearted.
In the end, people just need to let go of that thought and just take things as they come. Guys aren't evil things, despite the fact that some of them do bad. Women are just as prone to getting into trouble as men. One problem I have with women is that some of them use their sexuality to get things they want. But I don't really fault out women as a whole. Just the people who use this tactic.
Either way, I think it's silly to discriminate against gender because of past experiences. It doesn't really solve that actual issue that causes people to feel the way they do, so what's the point of it?