Aircraft strikes happen more often than you think, Chances are if you fly a few times a year, you have been struck. Aircraft cabins are designed to spread the charge over the entire craft evenly, Bit like a faraday cage ( if thats spelt correctly lol ) + the fact that your not earthed helps but the main thing is that its spread to minimize possible issues with igniting fuel / shorting vital kit. However , with that said. I would still prefer not to be struck lol