Will i get like this, or does it already happen

I don't know if it's just me but at times my parents can be somewhat embarassing. Everyone says it from time to time, especially little kids when they get that extra hug or that extra kiss infront of their friends when they're about to leave or go play. I usually see it everyday at work with the kids in my day camp right before they get to the school yard when they're getting dropped off in the mornings.
Unfortunately I'm not talking about that kid of embarassment from my parents. With that you can't be embarassed and you understand as you get older that they just love you that much that it could be hard for them to let go, even for the day. I'm talking about when not only my parents, but when my family gets drunk. Most of my imediate family drinks a great amount, especially with family get togethers, vacations, or even on the weekends.
The most recent episode was with my father. I love my father to death and I can't change him but I wish I could on those really roough days for him because he just turns to the bottle pretty much all the time until its gone. I guess it didn't help him growing up that my grandfather had a drinking problem either. I mean before he had his double knee replacement it seemed like it was just for the pain, I mean he was killing a bottle of wine to himself every friday night just so he could be numb enough to not feel his knees. After that I thought he would stop going that hard. For the most part he did, but he still has those days. It takes him a lot to get plastered, but when he does he gets stupid drunk. Its not like hes a spring chicken either so when he gets up to go to bed i have to follow him to make sure he doesn't trip and eat shit. When he gets that bad to he says some depressing and truthful stuff. The filter is off and anything and everything that you don't want to hear comes out. Usually he just rocks out to his vinyl which is great, not because of his physical and mental state, but because of the selection and rediculous amount of music he has.
At his age i can't change him and honestly i would do the same and probably have, which is what scares me the most. It felt just embarassing to sit there and listen to him rattle off these depressing things about his life and how he looked like the world was about to end in the next few hours. I don't want to end up like this, but from watching others drinks seem to solve the problem temporarily for the time being and don't arise again till the next time i get that way. I see the damage, but at times its hard to prevent it from happening. Hopefully i can find some sort of middle ground or just control myself enough that I never get that way. The worst part about this is that this happens everywhere in this country and effects most of the people too. We all gotta get our shit together one way or another.

peace & love