I am contemplating divorcing my alcoholic husband of almost 5 years. We have 2 beautiful?

You should leave him otherwise you will continue to be miserable and your kids will grow up feeling the same way. Its not okay for him to abuse you in any type of way, especially in a physical way and in front of your children. Do you really want them growing up seeing that type of behavior? I see nothing in your paragraph that tells me you should stay.