If we were unfortunate enough to live in a theocracy instead of a democracy....
.... we would find ourselves unable to criticise religious beliefs, unable to bring pedophiles to justice if they happen to be priests, unable to sue the church for their misdeeds, unable to prosecute those responsible for covering up crimes committed in the name of god. We would have public holidays on religious festivals. We would be forced to give churches tax exemption status and relieve them of any basic fair trading requirements to tell the truth about their products. Church leaders would have excessive influence over governments and school children, parliamentarians and local councilors would all be forced to begin their proceedings with prayers. We would be lectured on the 'true meaning' of xmas.
We would be supporting the right of parents to brainwash their children from birth and we would have religious chaplains swarming through schools and hospitals like bees in a hive. We would allow parents to deny life-saving medical treatment to their children on religious grounds and we would prohibit the terminally ill from ending their own lives with dignity. We would obstruct family planning, treat women as the property of men and ban them from male dominated careers such as priesthood. The government would pour huge sums of money into faith schools and defenceless children might also all have their genitals forcibly mutilated just to keep god happy.
Homophobia would be mandatory. Biological research would be restricted and cosmological research would be subjected to church veto. Well tested scientific theories would be discredited if the evidence contradicted the religion. We would have people killing other people in the name of Jesus, flying planes into buildings in the name of allah and the Army would have biblical passages inscribed on their guns.
Oh, wait a moment. That's just the stuff we already have............