No,your not safer with those cameras...you'll still get mugged and the guy will probly get away..even if he gets caught,its no thanks to the cameras.
If someone would like to monitor how often I leave the house or make silly faces at my bathroom mirror,then go ahead and spy away.
I think constant satellite imaging and random privacy invasion is a bit far fetched and has little effect on the average persons life if at all.
so surveillance cams see me buy snickers bars and crap...whatever.
Try once,fail twice...