One cannot just go by what a person has materialistically or monetarily. Misery in an individual can happen to anyone in any social/economical class.

I was thinking again about him getting you off the ownership of the house, it could be a deep fear that you will leave him, maybe he doesn't feel good enough for you and as you are nearing getting your masters he is fearing even more.

I do think he should get help, I understand he doesn't want to, but with the right therapist he could gain a lot on whatever he is struggling with. A lot of men feel that getting help means they are weak somehow, but that is simply not the case. Getting help is the "smart" thing to do.

If he feels everyone is out to get him then he needs help to get to the bottom of "why" he feels that way.