My answer is rather specific to my situation and may not resonate with you, but hopefully it's gonna give you another perspective you haven't thought of.
My answer is: A combination of being an antinatalist (I believe that bringing a life into this world is morally wrong) and the personality type of INTJ.
Because of the former, I've been holding a grudge against my own parents for not getting my consent before deciding to have me (duh). I can't help it. They forced me into this world. Literally - the doctor had to use a vacuum extraction as I didn't want out. It didn't get any better... The suicidal thoughts started when I was as young as 6 or 7 years old, so I've always known that I didn't wanna be here. Now I know who to blame.
My dad passed away 3 years ago, but my mom is still alive and I've recently cut her out of my life (long story). She's been trying to force herself back in with tears in her eyes but I just ignore her. I don't even look at her. Not wasting a single drop of my energy. Too exhausted. I remains myself that she's brought it on herself. SHE chose to have me. In other words, to me she's the bad guy here, so there's no reason for me to feel guilty.
Thanks to the latter, it's pretty easy for me to turn off that thing called "emotions." To hold my ground no matter how emotional the other person gets. To choose logic. I've cut out a lot of toxic people, there's honestly barely anyone left. Those who are still around... I just don't care, honestly. They're part of the problem.
I miss my dad. It hurts a lot. It hurts even more that I'm the one who found him. So I know how it feels to lose someone you love. But I am happy for him. I think about all the shit he longer needs to handle, all the things he used to do... He's free now. Now I'm more sad for myself... I'm the one who's still here.
They say "he's in the better place now" and "rest in peace" for a reason. Your loved ones will know and be comforted by that.