clueless24

Hi everyone, wanting some advice if anyone has the time.
I have been with my boyfriend for about 8 and half years, the love of my life! We have 2 children and for the most we are a happy family.
When we first met he was drinking 4 cans every other day or so (not that bad) but now he is drinking im guessing 10 every night, now i say guessing because he hides them from me, could be more.
He knows he is an alcoholic, he knows he should quit, but he wont. His dad died last year due to alcohol reasons but he doesnt think it will happen to him or he doesnt care. One night i told him he is going to die and leave me and the kids behind devatated and his reply was "so, at least i wont be here to see it" i cried for a week!!
He already has quite a few health problems one being type 1 diabetes.
How long are we going to have with him?
Help me please!!
Thank you, clueless24