I had an argument with my father about how much better I have it in life and how I should be greatful, because I have phone etc. I explained how I felt and that I absolutely hate existing. Just seriously greatful for what? I don't want to sound like an ass, but I thought we were passed that. That depression doesn't discriminate how wealthy you are.

He lightly hit my little sister (3yo) on the back, because she threw toys at him. It wasn't a hard hit but I still went on tantrum on how you should never hit your kids and said that he shouldn't be surprised why everyone of his fucking children are in therapy. His defense was, that he got hit as a kid a he never had to go to therapy, as in he turned out fine. 
He asked me to apologize because I told him to fuck off. Am I just to sensitive? Should've apologized?? Anyways that's the point where are started crying and left and now I'm venting about it here on reddit. Probably ruined the dinner for everyone.
Writing all this down made me feel better. I will probably reflect on this situation later or on my next therapy session. 

I apologize for any spelling mistakes.