Radiation is our friend! :D
>Common sense says, Radiation cannot be good for you.
Radiation is the reason you exist to complain about it. :) At this very moment in time, you are absorbing and producing thermal radiation to regulate your body temperature, and visible light radiation from your monitor is streaming through your eyeballs allowing you to read this sentence.
Granted, visible light radiation and wireless network radiation aren't of anywhere near the same energy levels. Wireless network radiation is several orders of magnitude less powerful. There's no known scientific mechanism by which it could be bad for us, nor any evidence to suggest that's the case. Granted, common sense also says to investigate what could potentially cause health effects, but it makes no sense to be frightened of something simply because it's unfamiliar.