> Adults bully, too, so you do need to learn to handle it.

Eh, they do. But not nearly as frequently as children in my experience. I was tormented mercilessly in school, but I'm actually struggling to think of a single instance of bullying I've experienced as an adult. And I don't think that's because I "learnt to deal with it". I think it's partly because most bullies grow out of it, and partly because as an adult you're usually afforded the agency to leave situations where you're being bullied.