The concept of god is so much relatable with the dictatorship . God is the one who controls everything (this is what we expect). When we want dictatorship, we want us to he controlled , we want someone to take our every decision , we loose self control, rather we don't want it. This is want entirely contradictory with the democracy . There's not a single force who controls us, it's us who decides, who runs every cycle rationally . Thus democracy appoints different bodies for respective tasks so that there should be an interaction, arguments , suggestions, opportunities . Not a single body does this all. It teaches us to believe in ourselves, that we can be self-controlled, capable .