I understood what made him upset, and I understood how he reacted and why... I started showing same behavioral traits as him. But it was only after I had our first child.
Stuff that I took for granted when my Dad was doing it, now I understood, was actually meant to take an effort, on behalf of a parent.
Unfortunately, my Dad passed away weeks after my first child was born. It felt like the 'nature' decided to make a replacement.... and exchange the life of my still young dad, to our first child...
So I did not have the time to express back to him, my gratitude, my newly found understand of his sacrifices to make his children happy & confident, and, at the same time, isolated from bad/unfair stuff....
Therefore, my advice is, do not repeat my mistake. Show your parents, while they are alive -- that you understand their sacrifice, and you are prepared to do the same for your children....