The problem is because they always say it's for XYZ, then it slowly, but inevitably gets expanded to everything else. Just look at London an CCTV. It's supposed to make you safe is it? Yet, crime still continues unabated. The problem with authority - particularly the people like to wield it over other people - is that you give them an inch and they take a mile. It's not like the system isn't abused as it is. It's an issue of trust. Do you really trust Big Brother to have your best interests at heart? I'd say the overwhelming majority of people - on both the left and right side of the aisle - are in full agreement that they don't.
“There is no such thing as a weird human being. It’s just that some people require more understanding than others.” - Tom Robbins