"It feels easier to stick my head in the sand and wait until the next crisis arises".
You are in crisis now, your family is falling apart because of his drinking.
The above therefore is not an option.
Burying your head in the sand will not help you any. Enabling him by covering up for him (who buys the alcohol?) also does not help either him or you. It delays any recovery.
Make your home an alcohol free one; do not for instance drink wine with him.
You had an alcoholic parent so you grew up with alcoholism, you now have an alcoholic husband. Like your Dad your H's primary relationship is with alcohol. Everything and everyone else comes a distinct second including your children, the temptation to drink was too strong (he probably thought he could control it) but alcohol is a cruel mistress. This is truly no legacy to leave your children; they do not need an alcoholic parent in their day to day lives because it will affect them markedly just as it has done with yourself. You married a person with alcohol dependency problems, you learnt many damaging lessons when growing up with your alcoholic dad.
He will promise much and be very remorseful but will actually do very little if anything. Actions speak louder than words here.
I would also suggest you read "Codependent No More" written by Melody Beattie as often in such relationships there are codependency issues. You are not in a healthy relationship at all here.
I would also contact Al-anon and getting support for your own self here (I will put up their details for you).
You cannot make him stop drinking unless he wants to seek help for his own self; not because of you or for the children. There are no guarantees here; he could lose everything here and still drink.
You cannot rescue and or save him from his own self here. You are ultimately NOT responsible for him.
The 3cs with regards to alcoholism:-
You did not cause it
You cannot control it
You cannot cure it