History repeats itself.

A couple years ago my Gma died after getting back surgery. Her husband is a huge bag of dicks that left her for the "supermodel" version. He was physically and mentally abusive and in all my 20 years of life has never talked to my family. Recently both of his parents died. He only went to his dads funeral to search his house for hidden money. So I hate him. A week ago he got his external defibrillator removed and it weakened his heart. My mom is his POA and it seems like history is repeating itself. She tried to make me feel bad for hating him by saying that he wants to live to see his only great grandchild. I don't want to seem like a huge cunt but I think he's full of shit. And I don't support my mother wanting to fly out to see him. Does that make me a terrible person??