It is possible for a married lady to not know her husband, even after years of being together. There are men who have murdered their wives for insurance money, and the wives never knew anything was this drastically wrong.

You'll soon finish school. Then you'll see what you want to do. Consider that, if you leave this marriage, you might prefer a job closer to where your parents live. In other words, don't take a job based on the idea that the marriage will go on. Don't let yourself be trapped in any way.

It does sound like you can be financially independent. You haven't exploited your husband. I see a huge potential for him eventually exploiting you.

You are so young and have accomplished so much. It can be the foundation for a full and satisfying life. Keep your options open. If you see yourself eventually wanting children, then you want a partner you can trust and work with. At age 28, your husband is who he is going to be. This man is going to have serious problems for the rest of his life. He has a bad attitude toward a lot of things. "Therapy" isn't going to reconstitute his character. Keeping marriage vows is all well and good, but you don't owe it to him to have your life ruined.

If you decide to separate from him, my guess is that he will appeal to your soft side saying that he needs you to save him. Don't be emotionally blackmailed. A guy like him is going to paint you as being in the wrong no matter what you do. He is headed for more failure, specifically at his job. He will need someone to blame, and it will be everyone around him, including you. You do not have to accept living that way.