AITA for hinting to my parents I’m going to cut them off after I graduate and they didn’t like it?

I’m 20M, I have a younger brother (16) who’s autistic. My parents put me into a lot of pressure about taking care of my brother. For example, in the middle of exam season I was asked to take my brother out because my parents had a PTA meeting. This has been the case since I was 13. I am… not happy about this. <br><br>I work and go to uni, like many students. I am tired of being told to take care of my brother when I have my own things to worry about like exam season. I’m considering moving out when I graduate and change careers so I won’t work in the medical field. I want to keep my distance from my family because I feel angry at them for putting my life on hold for my brother. <br><br>My mom asked me if I had a date for the grad ball and I said no. Then she asked if I could take my brother and I said no. She then asked why and I said I need a break from him. She asked what did I mean and I said I just need to get away for a while. She asked how long and I just hinted that it may be permanent. <br><br>My parents were shocked. They said they can’t take care of my brother alone and I said I wasn’t going to be around to help. They said they need me to look after him and I said they have 3 years to figure it out. They told me to stop being selfish and I said that for once, I’m being selfish because I haven’t been able to do that since I was 13. They pleaded with me to stay and help them but I said no. <br><br>My friends are divided. Some say I’m completely justified because I didn’t ask for my brother and have been pressured and used for free labour for 7 years. Others say I’m the ass because I should help my parents and it’s not my brothers fault. I’m feeling a bit confused and wondering AITA?