Thanks Hevyn.
It is so hard, when you want to be supportive, but they will not reason. We just had a 'talk', and he is so upset. I told him that he needs to stop and see that drinking is going to ruin his life. I could see in his face that he knows the truth. even though he denies and his excuses cover all bases. but I saw in his face that he was ashamed, for an instant.
I am sorry about your son. It is wonderful though that he sees a therapist, even if there has been no obvious improvement. surely he must get some sort of reality lessons from it?