What’s the real point of smart glasses?

I've been looking at smart glasses and genuinely confused about what they're solving.

Camera glasses (Rayban Meta, Xreal, etc.) - Why not just use a GoPro? Better specs, cheaper, longer battery.

Display glasses (Vision Pro, Quest) - Heavy, expensive, motion sickness. Why not just use VR at home or check your phone?

AI-only glasses (Dymesty, translation glasses, etc.) - My phone already has plenty of AI assistants. Does it just make things more convenient? When would I actually need glasses instead of my phone?

Every category seems to have a better alternative. So if you actually use smart glasses, what's the real reason? Is there a specific use case that actually works?

Genuinely curious what I'm missing.