If you had a kid you would want him to defend you?

Your dog depends on you. He didn’t choose to be with you. If you start trying to make him have a “use” then you just wanted a tool, not a pet, and I don’t even want to interact with you if that’s the case.

That might sound harsh but we’re not in the middle ages anymore, and no one needs a dog to protect them; if anything, you should protect him. He is the one that was forced to put his life in your hands.