he has changed and is not as bad as he used to be, I was responsible for ending it, he won't be able pay any of the bills whilst he's saving to move out, how was he supposed to start all over again at his age (we're in our forties) then moved onto Mr Reasonable, hes working hard in a dead end job he hates to provide for the family, can't do right for doing wrong, ended unresolved with me not knowing my ass from my elbow and feeling guilty as hell.
Lets break that down.
he has changed and is not as bad as he used to be
If a man was in court for GBH and his defence was "I used to be a murderer, you cant convict me because I am not as bad as I used to be" would you let him off? Of course not. "Not as bad as I used to be" doesnt automatically mean acceptable and non abusive.
he won't be able pay any of the bills whilst he's saving to move out, how was he supposed to start all over again at his age (we're in our forties)
He is using the threat of withdrawing all financial support to manipulate you into staying with him. He knows that the thought of not being able to feed the kids or pay the bills is a big issue for you and is using that against you. What he doesnt know is that you will get benefits and tax credits as long as you can prove that you are living seperately, even if you are under the same rood.
The age thing, a guilt tactic. He doesnt actually have to start all over again, he has to move on, but he doesnt want to so it trying to make you feel bad so he doesnt have to. I predict that if you stop doing his washing, cooking etc (as you will have to if you share the house and claim benefits as a single person) he will start looking unkempt, stop eating properly, wander about looking depressed. This is all designed to suck you back in. DONT FALL FOR IT, its the oldest trick in the book.
hes working hard in a dead end job he hates to provide for the family, can't do right for doing wrong
More guilt based manipulation. "I did it all for YOU! and you dont care, you are just throwing it back in my face!"
It comes down to the fact that his life is just as he wants it and he will do anything he can to stop you changing that. He doesnt love you but his life will be far more difficult without you. He will have to do all those inconvenient things like wash his own pants, pay his own bills, cook his own meals.
If you kick him to the kerb now then there is a chance he will make a man of himself. If you dont then I hope you are ok with being married to a stroppy Kevin (the teenager) for the rest of your life.