Lolac21 - A house is security and a known. A known for you and the children. A house can also be the object that ties you to a relationship. Arguing over half a house can cause a life time of upset....think "war of the roses". A house in 2 people's names is helpful for the legal side of things. From what I can figure, the husband is not the sort of person who would be drastically unfair.
Sleeping separately. He didn't agree to that idea. Now I was thinking - I think you asked the question and expected an instant decision. Add delay and time to think. Think to yourself (from his perspective) what are you asking? To sleep in separate bedrooms. From the man's perspective, he wants (I am guessing) to be a leading role model for the children, where the mum and dad share everything, a room, a bed, a lounge, some hobby activities, etc. When you stop sharing a room, what else goes?
The man left the room - this tells me that he needs time to think about what you are asking.
I am guessing that you both sleep with pyjamas and there isn't much of a sex life. I am guessing that you get dressed and undressed if he is in the room because you are used to doing that. The man can see you and see that you are ok. The man then subconsciously doesn't need to ask or check because he can see you, when ever he feels the question needs an answer. Little things like that can't be compensated and talking about every single point is almost impossible.
Playing the ideal role model for the children - that's going to be a hard one to counter act.....outright. If you can't counteract, what then? Perhaps use a process to get from where you are to where you want to be. To get to a process, both need to understand the others perspective. The process is then predictable and easier to negotiate.
You asked to sleep in separate rooms. Could you offer a trend of observations over the last few years that show how you are feeling? Then show how that trend might be different if you and he slept in separate rooms? It might be worth mentioning (at this point) that it's a process that is going to happen but you want the change to be controlled and gradual. Your thought is an initial short period of time separation. Separation of some description. It might be worth explaining that things are tolerable at the moment, but what happens when things get intolerable? The simple answer is that people start doing things drastically. You want to avoid this.
How old are these children? If the children are older than about 12 then perhaps getting the man to agree to you talking to the children about you and he sleeping in separate rooms might be a possible step forward. Talking to the children first and convincing them that there might be a few changes happening which is not their fault and might be seen as wrong but a chosen preference. To the man, you need to use the term "test the water" as a way of getting him to agree that you (or he) talk to the children about you and the husband sleeping separately. Then some how you need to ask the children for their views, without actually saying that you and the husband want to sleep separately, to see what they think.
Have you considered that if you and your husband sleep separately, it might cause the children to show a loyalty to one or the other parent, in case the separation moves further?
The bloke mentions that he loves the children to much to hurt them, you see his point. The bloke accepts that the situation is not ideal and is living with it as it is. He sees you as the selfish one because you want to make the move. This man sounds like he is very fixed in his ways, get up at the same time every morning, same routine in the bathroom, has the same job for the last 10 (or more years). He doesn't like change from what he is familiar with. If you want change, small steps, slight change and aim to get him to agree.
Your next steps are to try to see things from the husbands perspective, then see what the husband thinks the child's perspective is and then get the child's views about what parents sleeping separately means and how they feel about it.