Alcohol trigger warning

Last night I went out to dinner with my boyfriend, dad, mom and brother. We went to a family restaurant and although they do have a bar, my dad was getting wasted. He was hammered. His personality was altered and he wasn’t the same person anymore. Well, I didn’t drink because I just had a baby and I’m not at the point in my life where I feel like drinking yet. My boyfriend doesn’t drink as he’s a recovering alcoholic. Anyways, the manager kept walking around asking surrounding tables if they was ok and the food was good, however, she never stopped by our table. My dad started saying he drank a half pint of jack daniels on the way to eat then was ordering double shots. So I said something like wow your drinking a lot. He then said he’s in much pain. I asked emotional? He said no. Physical pain. Which I know he has something wrong with his back and he went onto ask me if I’ve ever experienced excruciating pain. I said we’ll just birthing my baby. He said that’s what I thought. So I then told him I don’t think it’s right he’s drinking that hard to take away his pain. Well now he’s done with me. He don’t want nothing to do with me after he totally embarrassed all us when we was out to eat. I don’t think I’m out of line to tell him that’s not the way you deal with pain, it’s unhealthy. I’m here to ask all you, do you think it’s good to drink heavily to relieve pain? I’m confused.