Questions I don't have answers for.

[Ethical]

He probably wont have a good response. If I say stuff like that he will just start blaming my mom. He doesn't speak well english which annoyes me. He was born in America but left to Greece on a boat right after and lifted their most of his life. Also, I get to sensitive and I am nervous to do that.

Facing your fears is hard to do, I think you should give it a go man, this could be a major obstacle for the rest of your life, what if your Dad does pass away and you're left to wonder 'what if?'. You could have a great relationship with your father, there's no harm in trying to re-establish it.

Ethical