Among other things, 'god' is...
- The answer you give when you don't know the answer but are too egotistical to admit it or too fearful of the unknown.
- A political tool for controlling your children, your spouse, your congregation, your constituents.
- An ego boost. "God spoke to me..." (because as someone here already mentioned, God places a higher priority on telling you how you are special and everyone else around you is not, rather than, say, feeding a starving child or saving an abuse victim).
- If we are talking about the god of the Judeo-Christian bible - racist, sexist, supports slavery, genocide, child sacrifice, rape, punishing the child for the sins of the father, and can't get its own autobiography straight. If such a god exists, it is no god of mine.