DH is not a big drinker, and a very caring dad and partner. But about twice a year, usually when extra-stressed by work, he goes on a total bender, turning up at home almost comatose, sometimes needing to be carried in by me and a cab driver. Or else he gets on public transport, falls asleep ending up at some sidings at the other end of the country. It's terrifying, because he doesn't answer his mobile and in that state anything could happen to him. I have to lie to the kids that he's tired if they see him like this. It happened again two days ago, and something in me has finally snapped. It's happened for so many years now the flowers and apologies the next day just won't do any more. AIBU?