AITA for not going to my grandmas funeral

I (40m) am a twin brother and was always very close to my twin. We have always had each other’s backs. <br><br>When I was 16 I was involved in an accident that nearly killed me. I had to have many surgeries and extensive rehabilitation. <br><br>My brother was a huge support through all of this. My grandma was a huge support as well. However my parents were very selfish. They only cared about themselves and their financial security. They were worried that I would not be able to look after myself and wanted to put me in a care facility so that they could continue to live their lives as normal as possible. My brother was adamant that they not do this. They argued that it was what was best for me, but really it was what was best for them. <br><br>My brother and grandma fought my parents tooth and nail over this and eventually got custody of me and I was able to live in my brothers home as an adult. <br><br>As I grew older I got married and had a child of my own. My brother also got married and had a child. I was able to function normally and was only a little worse off physically then prior to my accident. <br><br>My grandma was an amazing support as I navigated my new life as a father. She was also an amazing support for my brother as he navigated being a single father. <br><br>My parents have always been on my shit list. My brother and I have not spoken to them in years and have no desire to. <br><br>My parents have been saying horrible things about my brother and his wife to my grandma. She is now getting close to the end of her life. She has put my brother and parents on her list for inheritance. <br><br>My parents have asked that I remove my brother from being on her list and I am saying hell no. They are pissed off by this and are now using this as an opportunity to demand that I share my brother and I’s inheritance with them. They say that my brother and I do not deserve anything from her estate and that she would want her money to go to her only living children. <br><br>I told them hell no and they went crazy at me. Then grandma died. I am going off the grid for a while so I can’t be bothered with my parents and their shitty drama. <br><br>My parents are saying that I am the asshole for not attending my grandmas funeral. I said I still have no desire to even speak with either of them. <br><br>My brother says I am not the asshole, however he is a bit biased. AITA?