That’s objectively incorrect. Babies will smile regardless. You don’t need to make another baby suffer for it to happen. Peace is literally the absence of war, so yes there would be peacetime without war. If there’s no illness there is only health.
I think you’re mixing up the conceit that we wouldn’t appreciate things as much if not for the bad things or the absence of the food things, but that doesn’t mean the good things depend on the bad things to exist.
Fab - Santi - Rambo