Because we are rapidly moving into a situation where 'they' feel entitled to know everything about us, where we go and what we do. It's creepy and obnoxious. The same goes for road-pricing – NOT if it means a spy in my car! Use tolls if you have to.
Stop council officers and anyone without a warrant from spying on people with cameras, phone-taps etc. I'm a law-abiding person – leave me alone and stop prying!