[Minato sighs a little. He's not sure whether Zuko's lying or not about his reaction to his death, but there's nothing he can do about that right now. Right now, he can only take what Zuko said at face value.]

It's better than upsetting no one. It means that they care about you, Zuko. It's one of those trade-offs about being human.

I'm frustrated about not having my abilities either, but I'm not letting that stop me from trying to protect those I care about. Do you have other skills at your disposal? And there's always the option that I could train you in physical abilities that don't require firebending. Grumping about it won't change anything--you have to be proactive.