Is it normal to feel this way?

I'm bisexual. I know I like men, but every time I try to think of a "nice guy" in my head it's fuzzy. I told my mom of this and she thinks that I have underlying abandonment issues about my father. I never really think about it, and when he left I was a baby so I don't remember anyway. I guess it's what she has told me that may have been impacting my conscious.
Growing up, I came to know a lot of my mom's shitty male friends. They were all drunks. My mom dated this one guy for a while. One night my mom took away his beer 'cause she was mad at him. In turn, he punched her several times and threw her to the ground. She had black and purple bruises all over her arms and legs.
Before or after that(I don't remember 'cause I was little), my brother left me with his supposed "friend" while he went out. My mom was across the hall(we lived in an apartment). Me and him were playing GTA and everything seemed fine. He was 15 and I was either 5 or 6 years old. He smiled at me and told me to come to the bedroom with him, so I did. I don't want to explain too much, but let's just say he orally molested me. As a young child I was ignorant, so I went with it, thinking it was normal.
There was another drunk that liked to put his hand on my lap a lot. My mom found out and threw him out of the apartment and never talked to him again. Luckily he didn't go much farther than that.
Most recent was about 3 years ago when me, my mom, and her(you guessed it)drunk friend moved to Oregon. We were looking for an apartment with this one guy we met at a campsite. He was a Vietnam veteran and seemed like a nice, genuine guy. When we found an apartment he paid half of the deposit and we lived with him for a while. He began to show a bipolar side of him we never knew.
There was an incident. One night he was blasting his music. My mom simply told him to turn it down. He began to yell and scream at her. After that he slammed her against a wall and began to choke her. My mom's drunk friend pulled him off of her. My mom grabbed her phone and called 911. This freaked him out so he ran out of the house.
The cops came and didn't do anything. The next morning I woke up to the sound of him yelling and banging on my window. My mom had discovered that he had taken a shit on our front door. It was disgusting. Luckily, we never saw him again after that. I can't believe that's the same guy that picked me up from school almost everyday!
There were more guys that were assholes but these were the worst, and they never went to jail for it. There's guys on TV that I think are genuine and caring. I know there are guys like that in reality, but I think most guys are hiding something. I know it's unfair to males but I can't shake it. How do I deal with these feelings? .__.