Faith, Certainty, and Difference

Do I want someone else's faith in god, religion, morals, politics, and science to dictate how to live my life? No, I don't want to rely on someone else's faith. I want some control and autonomy over my affairs.

Why shouldn't I dictate to someone else how to live their life on the basis of my faith in god, religion, morals, politics, and science? Someone else might say no I cannot dictate to them, and give many of the same reasons as I did for my own position.

Thus, I return to all the questions about despotism, pluralism, difference, and democracy.

And where does rational discourse fit into the whole scheme?