UPDATE: AITA for refusing to lend a helping hand to my family with my autistic little brother after they completely disregarded my requests to make sure he's comfortable during Christmas dinner?

Sorry for not updating sooner, but I wanted to wait until I had calmed down and had time to think about what I was going to do. First of all, thank you so much for your kind comments and for giving me advice. Sometimes it's hard for me to see what's right and wrong, especially when it comes to my family. <br><br>After getting off work yesterday, I went straight to my parent's house, where I began explaining to them how I felt about what they said about my brother. I explained to them that he's also human and deserves to be treated with the same respect as anyone else and that just because he has autism doesn't mean that he should be treated any different. I also reminded them that he's my brother and that we should both be treated like their children and that I deserve just as much respect as my brother should also receive. After that, we had an argument over whether or not I should bring my brother to dinner and in the end, we both agreed on not bringing him. <br><br>They were still pretty upset that I wasn't going to bring him and I told them that I still can't forgive them for what they said about him. I told them that I had decided to take a break from them and not attend Christmas dinner. I also told them that if I were to bring my brother, then he would have to be treated with the same respect as anyone else and that I wouldn't make an exception for him. <br><br>They were taken aback by my decision and asked me why I would make a decision like this. I told them that I felt like I was being disrespected and that they should have been more understanding and respectful of my brother. They tried to talk me out of it, but I told them that my decision was already made. They then said that they would call off Christmas dinner, to which I replied that they didn't have to make a huge decision like that and that I was the one who decided not to come. They then said that I was being selfish and that they didn't want to celebrate Christmas without their children. <br><br>We argued for a while and in the end, I asked them why they weren't making a big deal about my brother not being able to attend. They stopped arguing with me and said that they would call me later. We then parted ways and I returned home. <br><br>This morning, my mom called me asking me if I was truly not going to come to dinner and I told her that I hadn't changed my mind. She then asked me if I had thought about how my brother would feel not being able to spend Christmas with his family. I replied by saying that my brother would also feel bad and left out if he had to spend it with people who don't want to treat him right, which is what my parents told me. She then said that she would call my brother up to come to dinner and then call off the Christmas dinner since I wouldn't be attending. I told her that if she was gonna call my brother, then she had to treat him with the same respect as she treats me. <br><br>She told me that she would but I could tell that she wasn't being sincere. I told her that I was gonna say no and that she shouldn't even bother calling him. I reminded her that she had said that he's "different" and that they didn't want him at Christmas dinner because he would be a "nuisance" and that if she truly wanted him there, she should convince me not my brother. I told her that she had treated me poorly and I wasn't gonna let her walk all over me and then just expect me to be fine with it. <br><br>She hung up on me and I haven't heard anything else about what happened at Christmas dinner. I also haven't been able to contact my sister since she's still on a trip. I'm glad I stood up for my brother and I don't regret standing up for myself and him. I'm just sad that I didn't get to spend Christmas with my family. <br><br>Thanks to everyone again for the support and for speaking up for my brother and me.