+1 for no. especially the fixed cameras. everyone knows where they are, they are common knowledge, so if you still get caught by them then stiff shit. and besides, for that short period of road where the speed camera is people will slow down.
as for red light cameras, i have no issue with them. while they might not save lives, they are catching people who are running lights and could possibly cause an accident. i've never run a red light, but i've almost been taken out by someone who did. unfortunately there was no camera at that set of lights so he didn't get caught.