AITA for refusing to attend my father’s funeral because he left everything to his “new” family?

My father (60M) left when I (29M) was 12 years old. He remarried quickly and started a new family, leaving my mom and me to struggle. He barely paid child support, never showed up to any of my big milestones, and treated me like an afterthought while spoiling his new wife and kids.

A few months ago, he passed away. I didn’t feel much of anything. But then, I found out that he left everything—his house, his savings, even his business—to his second wife and their children. I wasn’t even mentioned in his will. Not a dollar.

Now my half-siblings are begging me to come to the funeral, saying, “He loved you! He wanted to make things right!” My mom says I should go for closure, but I feel like he made his choices when he was alive.

I told them I won’t be attending, and now they’re calling me bitter and disrespectful. They’re even trying to guilt me, saying, “It’s the last time you’ll ever see him.”

But why should I honour a man who erased me from his life?

AITA?