Fed Up

My wife and I have been married for almost 4 years now. I can admit, in the past I may have put some of her personal business out there to family members (in confidence btw) and they used it against her. That in turn made it hard for her to respect me. I get that. But, she then got to a point where it would always be thrown into my face. My wife also has lupus and other mental health conditions that I look past. But she does not do anything for herself. She expects me to do everything for her. Or on her behalf because she is too tired or weak to do anything. However, she manages to wake up and play video games all day, order out food, and buy things she wants. When she gets any kind of money she doesn’t contribute to anything and says it’s my responsibility since I am the man of the home. She also has a 12 year old that I have been raising as my own since he was 7-8. It’s been brought up many times during arguments that he is not my kid. And I am not one to tell him what to do. She’s also accused me of cheating so many times in the past that I’ve actually just went ahead and did it. Now she’s saying she’s fed up with me. I’m fine with that. But am I wrong for feeling like I’ve been stepped all over? Oh, did I mention that he older brother has been living with us for almost 2 1/2 years and doesn’t pay any bills or contributes to the household? And the home I’ve just bought has all bills solely paid by me? And all of her parents vehicles and such are in my brand new garage and their clothing and other things are in my basement? I feel like she used me and I’m tired of it!