Hoods are cheap instant anonymizers. They protected graffiti artists and skateboarders as they trespassed to perform their art. They protected muggers as they performed their art too.
I love the hoodie. I wear one to work at least twice a week. I don’t think of it as a rebellious symbol or a cloak, more of a convenience since you just throw it on. It also protects you for from the occasional unexpected drizzle.