Why not? Sasuke can't tell if he's serious at first, but then he goes on. It always made sense to him, huh? He looks awake from Shiro, his forehead creased.

"Because the person you help could be dangerous, or too large of a burden, or maybe they've done things that make them undeserving of help. There's emotional labor involved in taking care of others and eventually everyone's empathy runs dry. Isn't it a waste of energy and resources to help those who could just learn to help themselves?"

... Thanks, Konoha. You took a perfectly kind child and turned him into this.