Magic is extremely rare and if performed in public, would incite mass panic. Sorcerors and wizards (or those accused of being such) are often persecuted and killed. Arcane magic is widely viewed as an unholy abomination. Clerics and other holy magic users, on the other hand, are revered as being able to manifest the benign powers of the gods.
Magic is more accepted among the Zaori, as it is an ancient elven practice. This is another reason humans are suspicious of Zaori.
Magic users are trained by secret cabals, and so each magic school has wildly different rules of conduct.