Protons and electrons are detectable, measurable and produce physical effects. The moment we can honestly say anything even remotely similar for a god, that's when we get to talk about category errors.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
