@ Olagold: Strong emotions indeed. I don't know what your paternal family did to you, but it must have been really bad, if you hate them so!

Whilst you know best what happened, I'd say, have a thought at the implications of a total break. It's a shame you didn't attend your gran's funeral, but it's done. I don't know how old you are now, but don't you think it would be best, if you put the past behind you, and show them what you've become, now you're a man?
You'll eventually have your own kids, (if you don't already) and you'll be proud to say, despite all you went through, you've come out on top, with well adjusted children. It IS a good feeling, believe me!
My old man was a bully, but one day I woke up, suddenly, the man I'd looked up to as a kid, used to think he was a big, tough guy, was just a little old man, and could do me no more harm, physically or mentally.
He actually cried when I left Nigeria for the last time, June 1990, said he was going to miss me, and had a feeling he was never going to see me again. Ola, it was at this moment I forgave him, and hugged him. He was right about the feeling he was never going to see me again, because 2 years later, he was dead, eaten up by stomach cancer. I got the news from my older sister, a year before I graduated.
I was sad, but very, very relieved we'd made our peace, and he didn't die, thinking I hated him. Please, think carefully about the relationship you could have with your paternal family, obviously if you don't want anything to do with them, that's fine.
Just remember, it's hard to forgive folk, when they're dead and in the ground, and it's virtually impossible to live with that feeling. Sometimes, confronting the past, and coming to terms with hardships you went through as a boy, could have a positive effect on your destiny as a man.