AITAH for wanting to leave a relationship even though he treats me like a queen

I (32F) am with my fiance (33M). We have been together since my early 20's. We are very opposite each other. He is loud and really crude, I am the quiet introvert type. People still think we are good together. About the last 5 years we have been really building our life. I helped him get a small business off the ground, I work for a firm. In the last year I started to find out I was sick in a way that is going to impact my job. I can still work, but under certain conditions from home. This is devastating to me. I actually am not really happy at my current job, but now that I am sick, I feel stuck. Trapped really. NO ONE else is going to hire me under these conditions. (even though it's illegal, they will always find an excuse not to). I have tried.

My fiance basically waits on me sometimes. He can be sweet. At the same time, he can be very dismissive and hurtful. He is neglecting his business. He finds excuses to stay home instead of building his clients. He constantly gets on me about my job, how I work too much, and this starts a lot of arguments. We can't afford for me NOT to work the way I do. He makes more than I do, but not enough for me to quit or move on from my current job. I just keep working to get raises or get promoted where I am. He also keeps using our credit cards, which REALLY grates my nerves. Every time I get a check, the majority goes to this and bills. There is very little I can save. Financially, we are not seeing eye to eye. In my mind, he has no right to complain about how much I work if he isn't going to make up the difference.

I might not be able to make much more, but I still get raises and promotions. His business is petering out. He sits in my face most of the week. I want to get a house and so does he, but he is all talk. It's like talking to a wall and I am over it. I am starting to feel like I am the only one with actual life goals and I am being held back. It's like carrying dead weight. He has the means to build his business and he keeps saying he will but does nothing. I am actually sick and I don't know how much more I have left in me to keep myself going. If I get worse off, we lose everything. He knows this. I know he loves me, and I love him but I am beginning to realize I want to be with someone who wants more out of life. AITAH?