LogFAQs > #885932017

It is enforced in the show. Stannis's actions, such as willing to sacrifice Gendry for his own power, sacrificing his daughter, shows his theocratic beliefs.

Also he doesn't want to rule, he wants it because 'it's his right'.

That's partially what I said, the people didn't give him that duty. Him not wanting to rule, makes him sound like a kid who doesn't want the toy, but doesn't want others to have it, since his parents bought it for him.