Hi OP,
Well done on keeping your resolve, amidst the wobbles which are to be expected. It is part & parcel of decision making that we weigh uo the pros & cons when making a decision. I was sad to see that coke is also a factor & that previously, altho it was years ago, that he has been violent toward you.
You are afraid to make the break with all it entails...upset kids, having to explain to wider family & friends, house move, strained finances. You know all those posters who said on here how the wasted years of their lives hoping, waiting, believing change would happen...and it did, because they made it happen. They took responsibility for theirs & kids future & happiness & created a better, safer, peaceful home. You develop resilience to cope with the strained finances, some difficult days, loneliness too for a while & sorrow. But you can say to yourself, like a mantra, that you did the right thing, what needed to be done for you & your children...and feeling that deep down in you will give you strength. It is like finding your power, taking control. It grows every day & one day you realise, ok it was so difficult, not knowing what to do, how to do it, if you could do it, if it was right.....and now here you are, look at you, you are doing it & you know it was right. Think of what life you want for you & your kids in the future.....the one without eggshells ...I think you know the way forward.
I don't have the same story as you OP, but I did take a leap as a frightened young adult, barely out if my teens with a newborn. It doesn't really matter I suppose what your fear factor is, it is something different for each of us perhaps, but if you can be brave, believe in yourself, trust your instinct, you will overcome & you will have a happier life. Imagine yourself 3 mths, 6 mths from now looking at this time & how you feel & knowing then that the hardest part is making the choice, the decision.
Who know...maybe in the future, after continued attendancee at AA, sobriety, admitting that he has a problem with his substances of choice...alcohol, coke... getting his life back on track, earning a living, supporting his children as a parent should, respecting you...who know if ye could date, see if those feelings are there. But he has such alot to prove... you need to make the right choice for you now. The rest can be left for the future...I'd be very surprised once you see your life without him & how strong you are if you ever looked back.
Have faith in yourself...