If there were gott darn cameras filming me all the time, I’d be a ‘grouch’ to.
I didn't mind them. They're radar-triggered still cameras that only catch you when you're speeding. Yes, I was caught a few times. The photos make for good souvenirs. It's the difference between having a cop pull you over and taking a good chunk out of your day (and maybe noticing something else to bust you for) and just getting a bill in the mail.
My main problem is that in the UK the government has a habit of putting them on low-accident roads where the speed limit is set too low -- they're used as a source of revenue. In Germany for the most part they're set to catch speeders where speed is a safety concern. Most people know where the stationary ones are and slow down, so the cameras effectively control the speed. I've only seen the mobile ones at the entrances to construction sites, in front of schools and in other areas where speeding would be more dangerous.