My experience isn't particularly extreme, and I don't hate all men (I have 2 sons, so definitely love them) but I can understand why some women do feel that way, and sometimes it's felt like hope over experience.
My dad was a lazy bastard who expected my mum, who also worked full time to do everything, never saw him raise a finger at home. Told my brothers they didn't have to do any chores, it was woman's work - I certainly had more than my fair share though.
Boyfriend number 1 - turned out he was married.
Boyfriend number 2 - cheated on me and gave me an std.
Boyfriend number 3 - Punched me in the face on a night out.
Gave up after that for a while!
Been sexually assaulted on a train, in a night club and raped while there were another 2 men in the house who heard it all and who did nothing to help me.
Had a job i my 20's that was full of contractors who worked there Monday to Friday, and went home for weekends. I knew of at least 70% that cheated during that time, and I'd say pretty much 100% tried to.
One of my closest friend's experience is way more extreme, and I definitely wouldn't blame her if she stayed away from men altogether. Her bio dad left when she was a baby and she's never seen him, and he's never contributed to her life. Her SD abused her and that's continued with every relationship she's ever had, including being hospitalised by 1. She's so vulnerable and ground down, abusers seem to sense it and I just can't see her ever having a healthy relationship. I don't think she's ever had a positive male relationship.