If I was to worry about RF radiation it's not the end devices like cells or meters I'd worry about, those operate in the mw range. It's the towers, which operate in the watt range that would be doing the damage. Some FM/AM radio towers also put out radiation in the Kw range. There was a post a while back about this one station that was so powerful it lit up people's light bulbs! I think it was in the Mws. If that did not kill people I doubt our little cell phones will. 😛
I suppose we can't outright reject RF being bad for us though, but I would imagine there are plenty of studies done on it and if there was some health issues we'd know from reliable sources such as scientists. I think most studies have shown that it's not bad for us.
Though, wifi and lot of stuff operate on the same frequency as microwave ovens, so I suppose that is food for thought.... or thought for food, if it's cooking our brains. 😛 Microwave ovens are also like 1500 watts in a sealed box.