He's also the closest thing we have to an adult on the island, defending the conch and insisting on rules and order. He makes a big deal about learning names, "frowning to remember them" (1.179): he sees each boy as a fellow human being, and wants to give him the right and privilege of being called by his proper name. Having names matters to Piggy, because, just like the conch, it represents a system of rules and order.
It's not that Piggy benefits from his interest in names. No one calls Piggy by his rightful name (we never even learn it). But the conch does benefit him. Without rules and order, people like Piggy get squashed—literally. With the conch, everyone gets a fair chance. If he's holding the conch, it doesn't matter if he's fat and unathletic. His voice matters just as much as anyone else's. That's probably why he defends it even when he and Ralph are being attacked by Jack's gang, holding it up and demanding, "Which is better—to have rules and agree, or to hunt and kill?" Piggy wants to go to Jack and the others and insist that they give his