Melanietree,
re your comment:-
"I suppose what i get is stability of a house and financial stabilty.I wouldn't like my children to end up in a relationship like mine".
Neither are good reasons to stay Melanietree; they really are not. Your house is akin to a warzone with a tyrant of a man in sole charge. You are his house elf and he sees you as someone to boss about.
If you were to tell your children that you stayed for the above reasons they will call you daft and even worse could possibly accuse you of putting him before them. You are doing your bit here to show your children that yes, this is acceptable to you on some level and doing that could well damage your own relationship with your children going forward. You are also teaching them such lessons on relationships. One day it will be just you and he, what then for you?.
What did you yourself learn about relationships when growing up; consider that carefully.
Sulking and other silent treatment are used also as control mechanisms; he does this because he can and it works for him. Its his desire to destroy any contentment you yourself have.
The object of the sulk is to force the other person to make the first attempt at patching things up so that the sulker can then reject them, thus extracting revenge. After what is considered an acceptable period of time, depending upon the gravity of the perceived misdemeanour, the sulker accepts reparation.
Honestly do not keep on continuing to do your bit here to teach your children such damaging lessons.