Am I wrong for not wanting to help my abusive ex?

my ex who treated me like shit the whole time I was with him, is now asking me for help, a little back story he ruined my life he mashed up my car, sent me to jail, made me lose my job, abused me to the point where I got a concussion, chocked me many times, even kicked me on my head and face.. his excuse is he was drunk the many times he’d put hands on me, or he was stressed due to a case he is fighting in court with his ex before me.

long story short he was found guilty in court for that case, his sentencing is coming soon and he want me to help him by coming to his sentencing court date to speak as a witness, but he caused me so much trauma that I want nothing to do with him, at the same time I feel bad for him.. I don’t know why, but I’m still in my healing journey trying to heal from what he put me through, I think it was so traumatic that my brain is not registering what I went through with him.. can someone please talk some sense into me (sorry for the bad grammar English is not my native language)

Am I wrong for not wanting to help my abusive ex?
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