Single moms help me

I just need some words of encouragement from any single moms. Please share with me your story and help me to realize that I am better off on my own. My baby is about to be 7 months and although I love my boyfriend very much and want to be a family and believe that things will get better, he just won’t stop drinking. When he drinks he doesn’t care about anything he can get aggressive (not towards me but just trying to fight people or breaking things) I just can’t take it anymore. The person he is when he’s sober is so different from who he is drunk. I’m scared that I won’t be able to give my baby the best life without him though how will I support us ??