You mean people in coma? We know causes of this condition in pretty most cases, pretty much. Death is similar. We shouldn't blame it on god. It's by design, heehee... Someday everybody will turn into dust+energy, The lucky ones will turn into pure light :) Science knows how to turn it into equations already.
The interesting thing for me is if that energy can be useful somehow and/or if it'll return to live another, different, better life, someday :)