I mean, you wouldn't mind if I followed you everywhere then, right? And waiting outside your home when you're inside. They call that stalking. Doing that systematically to everybody doesn't make it ok.

Plainly, I think it makes sense to not be constantly in view of a single entity when in public.

My building already has cameras at the entrances and in the halls. Doesn't bother me.

Abuse is possible, but I don't see why we can't limit it with laws and regulations. And the potential gains in terms of preventing crime and catching criminals are huge.