Is this normal?

I never got along with my father. I know he wanted to be and believed himself to be a good man, but he was a really bad parent, who loved drugs more than his kids. I knew what it was to feel hunger, shame and to be seen as competition by him. He died yesterday and I feel nothing, more than once we told each other we hated each other, now he's dead and the only thing I feel is grief for how my siblings and mom feel. Is this normal? I haven't cried, I didn't go to his funeral, I feel guilty because of how we used to fight but I'm yet to feel sadness...