My baby boys

I have a 2 year old & I’m 37 weeks pregnant, I left my baby’s father today. He’s a on again off again drug addict, as well as an alcoholic.

He was doing fine for awhile, kinda. But lately he’s been worse, he’s been taking off on me lying about where he’s going then I won’t hear from him for days because he’ll be out drinking & drugs. He did it recently & just did it again last night. So I’m leaving, my baby’s deserve better & so do I. He says he wants me to help, but I’ve been trying to help him for 4 years. I honestly don’t think I know how. I suggested treatment centres, but no.

Anyway, am I in the wrong if I want to keep him out of my baby’s lives? I don’t want them to grow up around that or witness him drunk/hungover or high. He’s a mess when he’s coming down on alcohol &/or drugs. With our 2 year old, he would never sober up when I needed him to. We created a schedule on how we’d co-parent but he never went through with it. He was always too drunk or hungover to take my son. Besides, he doesn’t have a stable home. He’d stay at his grandpas, but his grandpas girlfriend is a drug head herself & does drink often with my ex’s grandpa. He’s probably into drugs too. Anyway, am I in the wrong? I just want what’s best for my baby’s.