The conversation always start going deeper after this word appear

"why are you being like this?"
"why did you hate me?"
"why does the earth rotate around the sun?"
"why we have to eat meat?"
"why always me?"

A much more meaningful possession and background story needed to be shown as the answer

between 5W1H
I hate "WHY" the most

its like asking for the truth and the 'reasonable feeling' at the same time, which could turn into conflict madness or even peace.