Yes! That's exactly what I am doing now when composing the answer to this question. The truth is, I don't think there is anybody out there that can be exonerated from this happening, especially those that are from third world countries where public power supply is social challenge to many of the citizens.
Everyone in these countries can't boast of 24 hours supply of electricity. And to make matter worst, these same countries happen to be dumping grounds for electronic mobile or computing devices that require constant supply of electricity for them to be used as recommended by the manufacturers.
Therefore, it is logical for one to be charging his/her device while using it, owing to the fact that one can't predict when next they might get to see power again to do the charging of their devices. Apparently, it is a case of make a hay while the sun is shining.