I'm starting to hate men..... how can I shake these negative feelings?

I'm beginning to dislike men in a very unhealthy way. I work with a lot of men which isn't a bad thing, however from our conversations I'm seriously beginning to think that all men are jerks! They cheat on their girlfriends and sleep with several women at a time. Every man that I have known has had some serious issues. Even my father cheated on my mom. My mom is extremely beautiful and classy I don't get why cheating would ever cross his mind. A friend of mine cheated all over his girlfriend, he ended up marrying her and this poor woman is probably going to die one day never knowing the truth. I get hit on daily by married men..... its disgusting! I want to get married but seeing all this around me makes me wonder if it's worth it. It upsets me so badly. I've had boyfriends and of course I've been hurt like everyone else. I need some help getting rid of these feelings. I don't want to always play the victim but how can I not when I witness such wrong doings? Please tell me I'm not alone.