My stepfather died today and i couldnt care less

My stepfather passed away today im 31 now and havent seen this man in 25 years, yesterday night i got some messages from his 2 daughters saying his dementia took a turn for the worst and that they think he wont make it through the night and behold, he didnt. Yesterday night i couldnt sleep, but not because i was saddened by the fact that the man who sponsered me for the first 20 years of my life is now gone. But because, i dont feel anything. Ive never hated this man. Despite, the mental and phisical abuse me and my siblings suffered at his hand for 15 years, i never felt hate for him. I felt nothing. No love, no resentment. I just felt like he was another obstacle throughout my shattered life that i had to navigate around. And now that hes gone, i feel nothing. No relief, no happiness, no grief or sadness. I feel empty. I am so conflicted as to why i cant feel anything at all. I dont know if its a good thing, or a bad thing, all i know is i dont feel like celebrating in any way that, the one person who should have protected me throughout childhood, is now gone. I feel numb.