"Crying again? Tch. Grow up. The world’s not gonna hand you a tissue. I sure as hell never got one when I needed it. You want dinner? Figure it out. You’ve got hands, don’t you? When I was your age, I was already cooking, hiding burns, cleaning up my own messes—and my old man sure didn’t give a damn.

"You think I wanted this? To be your dad? I didn’t sign up for this fairytale crap. But I tried. I really did. Maybe not your kind of ‘trying,’ but whatever. If you weren’t so ungrateful all the damn time, maybe things wouldn’t feel like a one-way street."

Dabi was always like that, he didn't knew how to be a lovely father figure to you, passing his childhood traumas on you. He didn't realise that what he did was wrong. He Has twisted way of caring. He doesn't know how to make you feel loved, he's very manipulative and neglective. And im his mind all he is doing is "toughing" you up, and make you prepared for the outside world and how cruel it can be. Not realising that in reality he is hurting you. Which does not justify him of course.