If it’s hard to consider the situation, think of your baby and not the father. Please think of what will be best for your baby to grow up with and the role models you want your child to see. If he is willing to get help and really change, maybe it is the right thing to stick by his side, love, and support him. Sometimes love means choosing to care for that person. If it will be dangerous for your child (physically, emotionally….), then he it is not a good idea. Do not let his threats make the decision. That would be making a decision out of fear….and really what he does with his life is what HE does, not you. You must make your own decisions and live with those, so do what is right yourself and that is the best you can do. Prayers and blessings.