What are you getting out of this relationship now?. Something has kept you within this.
Controlling behaviours are abusive behaviours; ALL that you have written re him in your last post is controlling behaviour. He bought a 13K bike but you can't have a dishwasher as that is for "lazy people"?. He's controlled you in all the usual ways such abusive men do.
You may want to read "Why does he do that?" written by Lundy Bancroft. Your current H will be in those pages.
Your children are more aware than you think about him, they likely think he is a cold hearted and mean tyrant and wonder why you have put up with him for so long.
What are your children learning about relationships here; this current model is certainly not healthy. Do not stay for the sake of the children; you do not want also want them to think that you put him before them.
We learn about relationships first and foremost from our parents. Ddamaging lessons to date have certainly been imparted here by both of you. This cannot continue.
When he retires he will be exactly the same if not worse than he is now.
I do not advocate leaving lightly but your marriage was over some considerable time ago. Better to be apart and happier than to be together and miserable. He will remain locked in his misery regardless; what he has done is drag you and by turn the children down with him. He is a very selfish and damaged individual. It is not your fault that he is this way, his parents likely did that damage.
I hope you do manage to get out, there is support out re leaving him. Womens Aid are also helpful.
It takes a considerable time to recover from such abuse and you may want to look into Womens Aid Freedom Programme as well.