I don’t want my baby daddy in my unborn child’s life

buggy

So a little backstory… I got pregnant with a guy I had just met. He seemed super sweet at first but quickly changed. I had made it clear to him that I didn’t want a relationship because I had just gotten out of one, I actually broke it completely off after I met him. My ex was texting me asking to go out one more time the day after I broke things off with him (we weren’t dating, just still talking, I didn’t cheat on him) I told him idk and that it didn’t feel ok which to me is a subtle way of saying no with out being mean. After this my baby daddy, who I’d only known for a few days at this point, asked to see the texts and I sent them to him not thinking anything of it and he went off on me, telling me to go f myself and saying he was going to kill my ex and asking for his address and telling me he was going to go to his work and kill him there. All of this was really scary to me and I asked him to stop but he was still being aggressive. After awhile he calmed down and we talked it out but this was the first red flag. After this there were several times he was really aggressive, he is an alcoholic and he’s very aggressive while drunk. He has started several fights in my presence and I had only known him for a short amount of time. He has also been aggressive towards me while he was drunk to the point of me crying and hiding in a bathroom, he never got to the point of physical hurting me but I’m scared he would. He also has a massive lying problem and abuses drugs like cocaine. When I found out I was pregnant I freaked out and didn’t know what to do because I always saw in the movies that the parents always try to work it out so I asked my parents to help him get on the right track.I didn’t want him in my life at this point and tried ending it several times but he always found a way back but I thought that it was the right thing to do to let him be the father because he wanted to so bad. My parents have taken it way to far and he is now living on our property and they are spending money to help him but he has shown no progress of stopping his bad habits although I have talked to him several times about it. I have decided now that I don’t want him in the babies life because of his doing and he threatens to take me to court and my parents are siding with him and telling me I’m crazy and it’s just pregnancy hormones. They have also tried to turn other family members against me but after I told them the actual story they relooked it and Changed their minds. Am I being crazy and unreasonable?