ILP- Welcome, I am sorry that you are here, but you will learn so much from SR. You don't have to make any decisions on anything today. You need to educate, read, go to some alanon meetings or open aa meetings. You will find out what you can do for you and your children as they deserve one healthy parent.
There is a saying at alanon
If you leave him and he gets sober, good for you...
If you leave him and he doesnt get sober, good for you....
They also say not to make any decisions for 6 months to a year. Take your time, educate yourself and life will slowly get a little better for you and your kids.
((((((((hugs))))))))))