Thanks for all your well wishes.
I've decided not to go to the funeral. I was never particularly close with this grandfather, since my whole life he lived in Florida and I saw him at most maybe once a year for a few days. He also has had no idea who I was for at least the last 3 years (he had severe dementia), and we never talked on the phone since I was a young child, and even then, I mostly talked to my grandmother and he would say hello at the very end of the conversation, and that's about it. I did attend her funeral because I felt like I had a personal connection with her. While I'm sad about my grandfather's death, I don't feel that I need to attend his funeral in order to get a sense of closure.
If anything, I know if I attend his funeral I will be angry about it, because my parents are not giving him a eulogy because it's Erev Sukkot, and because every single time I see my parents I end up feeling resentful and hurt by the end of the meeting. I would rather attend his unveiling in a year, and hopefully there will be some kind of eulogy at that point.
And all you people telling me to go to support my father...are you new to this blog? I've barely spoken to my father in years, by his choice (not mine) so why should I go for his sake? You can't stop talking to your children and then expect them to support you through difficult times. You can't tell someone they are no longer part of your family and then expect them to act like your family when times get tough.
My grandfather had been living with my parents for the last 3 years, and not once did I see him at their house. You know why? Cause my parents haven't invited me to their house in over 3 years. I'm not welcome there.
As for "he must really want me to be there if he offered to pay for B", well I moved the date of my wedding to a Sunday (rather than a Saturday which was more convenient for me and most of my guests) because I really wanted my parents to be there. They didn't show up to that either.
And yes, they did come to my PhD graduation- because my dad's parents (including my grandfather who just died) didn't come to his PhD graduation and he decided that he would come to mine even though we were barely talking. I think that was more about him not wanting to be like his parents than anything about me. Even then, they scheduled a flight that afternoon (which they didn't have to do at all- they could have taken a later flight or gone the next day, and it was a vacation, not even a business trip) so that they would only be there for the ceremony and about 20 minutes afterward, and then they high tailed it out of there.
But this is not about revenge on my dad, although I still am angry at him for many things. This is about my lack of connection with my grandfather. I don't feel like I would get anything out of attending his funeral other than a lot of stress, and having to work all weekend because of all the work I would miss. My job isn't the type of job you can just take a few days off from-if I don't work this week, I don't have lesson plans prepared for next week.
I went to my grandmother's funeral, in the same place, and I pretty much know what to expect. I'm glad I went to my grandmother's funeral, because my grandfather was very upset and I was able to help him out and hold his hand during the funeral. But now he is gone, and funerals are not for the dead- they are for the living. And in between my grandmother's funeral and my grandfather's funeral, all the living people I know who will be there have told me I'm no longer part of their family (my non-religious brother isn't going either), and have stopped talking to me or contacting me, except when people die (and my once yearly phone call from my dad on erev rosh hashana). So I don't feel particularly inclined to help make them feel better. Does that make me a bad person? I don't think so. I think it makes me someone who has been hurt on so many occasions of trying to get along with certain people, that I just can't show up and get hurt again.