Thanks SS, Its a tough one that is true. When I last lived at home my Dad had only started drinking so I really don't have the same experience of it as say my eleven year old brother who has never known a Dad that doesn't drink...
I am really so grateful to everyone for their support and hugs. This is a cyclical thing, the cycles will keep going until either my mother leaves him (highly unlikely) or he gets a serious wake up call. Sometimes I fantasise about him being really badly hurt or something so that the wake up call might come. I know that its awful but he has hurt the six of us and my Mum for so long now, and all he cares about is himself. Like I said earlier, I don't love him any more, I tolerate him. This situation is of his making, and its sad for him. I am 28 years old and have my own house, my own job (which he disapproves of!) and a fantastic boyfriend who understands completely as his Dad is a dry alcoholic (they can be just as difficult to handle as the "wet" ones!)