Bloody hell - i feel REALLY sorry for this guy! I think you should leave him if he is THAT much of a disappointment. My partner is much the same, really disheartened with things, we are likely to lose our house and will never be able to get another one. Will i leave him? Um, NO because i LOVE HIM. Yes, he drives me mad, yes i've nagged, cajoled, praised, shouted, cried, had a nervous breakdown but I love him. He is my soul mate and we are in this together. I had to look to myself, i haven't helped him, but that is me, not you - you on the other hand, you sound perfect. Perhaps you could get together with my DP and "help" him.
Have you ever thought that actually, your DP really might have had enough, but that you are forcing him down a road, career wise, that he doesn't want to go. I'm sorry if im being harsh, I DO understand your frustrations i do, but to leave him over a house?? Is it really worth it? What is bricks and mortar at he end of the day? Things aren't always going to be like this - they can't be. We just have to ride the storm. I really really think you should get off his case, you say he is not depressed?? I am, you could be describing me!
Maybe he wants to jack it all in and get a job at Tesco, maybe he wants to work in an animal shelter or with disadvantaged children, all jobs that have their own rewards, would this be good enough for you?
Do you still love him? Because if you do, and you leave him because of this, you are going to be so unhappy.