Everyone has a unique way of finding inner peace. Yours may be being a jw gives you peace. (Although...it doesn't sound that way from your past experiences)
Sorry, I can't remember who said this quote- If we don't learn from the past, we are bound to do it again. (it goes something like that)
Have you considered that maybe your euphoric state of peace could be due to other things happening in your life at the same time. Such as- You are gaining stability with a good husband and a home. Also, the witnesses provide alot of friends. (Mostly because of love bombing and because they are taught that the outside world is evil, so they tend to make the friends they see at the kh more like family.)
I'm sorry that you can't seem to get your life together without the assistance of one huge commune. But if it works for you, then I'm happy that you've found what you are looking for- a place to belong. However...this path you have chosen is not for everyone.
Hopefully your four kids will find the peace that the kh offers as well. If not......be prepared to lose your children at some point. I know my children are both very unique. My daughter is stubborn and won't let anyone tell her what to do. (She's a tauras, and I love her for it!) I never would want to break her spirit to make her be who I am. That is what will have to happen if you expect your children to be a jw when they grow up. More than likely.........Your children will grow up and decide to be catholic in their adult years. All of the witness friends that you and the children once had will not be around for you when that happens, since you will be marked as spiritually weak. I hope you're ready for one more traumatic event in your life, because going back guarantees it. I'm sorry to just lay it out there like that, but it's the truth.
Whether you go to the kh or not, you are going to have ups and downs in your life. Learn to deal with your problems head on instead of running to the security of your childhood. That is the hard road.
Well....... that's my 2 cents. Honestly.....I wish you the very best. Love