I just need a different perspective on this and can't talk about it in RL.
My DH is a lovely man. We've been married for many years (almost 20), have two DCs aged 11 and 14. Not perfect, but generally happy.
But he binge drinks.
He goes out around twice a week and comes back behaving like an arse. He is loud and argumentative and I hate him being like that around the children.
He has always done this, and when he was younger it was far worse. It's one aspect of UK culture that I hate. It's in my view ridiculous for a 50 year old man to be staggering about like a 20 year old in magaluf.
The backstory is that two years ago he got far drunker than I've ever seen and ended up almost injuring my arm. The children were well aware of there being an incident but as it was done by him closing my arm in something (forcefully) I told them it was an accident, which was sort of truem. He didn't realise my arm was there , but he was having a strop and forced the door shut and then didn't release it when he should because he was so drunk. My arm was so bruised it took over a month to look ok. I considered leaving him then but he was remorseful and gave up drinking so I stayed. 
Even reading that back makes me feel a fuckwit.
He started off as not drinking at all (and being very judgemental about everyone else drinking in the process which was bloody annoying), then drank moderately which was far better all round. But in the last 6 months or so, he's back to his old ways.
Last night was a good example. Myself and the youngest DC stayed up to watch a film. DH comes in clearly drunk and talking loudly. I had ordered him a take away which he starts moaning about, but in a 'jokey' way. My hackles rise at his behaviour in front of our 11 year old who is by now rolling his eyes and making drinking gestures to me about his dad.
DC was going to bed anyway, so I used that as an excuse to decamp upstairs. I am shite at hiding my feelings , so by now DH knows I'm not impressed. I take DS up to the bathroom to brush teeth and DH follows us up as he's now becoming argumentative. This is by far the biggest issue when he's drunk. I lock the bathroom door and he's then shouting through the door to DS saying mummy is the one with the drink problem . She's scared of ending up like her dad who is an alcoholic. 
I remain calm as I've learnt that diffuses things far quicker. DS didn't really hear it all so we laughed it off with 'silly daddy' type comments. DS and I go to sleep in mine and DHs room and DH is in the spare room (he snores when drunk just to add to the delight).
The next bit is where I need different views:
Re: my dad. Yes hes a full blown alcoholic which I have only recently discovered. I have virtually NC for many years and the children don't know him.
I am not a big drinker at all, but never have been. I grew up with parents with drink issues and just don't like being around drunk people much. That said, I'm not tee-total. I've never consciously worried about being an alcoholic just because my parents have issues (both were heavy drinkers when I was young, but I wouldn't describe them as alcoholics at that time.) But I am cautious and moreso with age.
I want to know if you think I'm right to be so intolerant of DHs drinking ? I don't feel its anything to do with my dad as DH claims . For me, its because he badly hurt me once purely because he was so out of control and I feel let down that's he's drinking again. I could have left him for what he did two years ago , but now I feel as though I was a fool not too. When the children were younger it wasn't so bad as they would have been asleep when he got back bit that's not the case now and I hate them witnessing this. But given I've only found out about the extent of my dads problems in the two years since the arm incident, I'm just worried its colouring my view.
The bottom line for me is I don't want my children seeing their father drunk. Mostly because he's not a 'nice' drunk. It's become a viscous circle of him being drunk, me getting wound up by it and not playing along with him ( I don't say anything but my face probably says it all ), he then becomes very defensive and argumentative and I have to try and diffuse it all by the grey rock method mostly.
But this 'defence' he comes up with about my dad being an alcohol does make me question myself. Maybe I am now more uptight about drinking because of that.
Is it ever ok for parents to be drunk in front of their children on a regular basis ? Amni being uptight and if I just laughed at off it would be better ?
Sorry this is so long 