The answer is...not quite what he imagined, and the offense taken is not so obvious. He would assure him he was not implying that Dirk is indifferent to his health, so much as coffee of all things was not likely to harm it. That, believing coffee was any danger at all was rather ludicrous, and such myths were above someone like Dirk.

Or so he'd like to believe. And yet...

For a moment, he stares at Dirk, eyebrows raised as he blinks owlishly at him. As if the man before him spun a tale beyond belief, and maybe he did just that. In the coming moments, he politely smiles up at him, trying to find some way to put this that won't offend Dirk any worse than the topic existing already has.

"My dear boy, have you ever consumed coffee before?" He asks that with a gentle ease, like one might a child when they were about to dispel some fairytale they've taken a particular and self-destructive fancy to.

"I ask because it holds no more psychoactive components to it than most other consumables. Rather, it has quite a few health benefits to mortal flesh, and I daresay the amount of sugar used in most foods here is far more harmful to one's mind and body both, than that which coffee could ever hope to achieve." He shifts, pushing himself to sit more upright, than leaning on his elbows like he was moments ago.

"Consider me intrigued with your stance, but not in direct opposition. I merely wish to understand what makes it the focus of these proported bad habits, but nary aught else that could influence the minds of mortals just as easily?"