With Strange Eons, Even Fog May Die
Spellcasters are rare. Human Wizards are now required to attend magic colleges with a very low survival rate, after which they are almost immediately sworn into a ruler’s survice. Clerics are equally rare as they are chosen by the Gods for a variety of reasons, essentially becoming their avatars on earth. It is a Paladins duty to defend and seek out new clerics in this world. Magic is not hated in this world, as it most people recognize that it improves their lives and most spellcasters are watched carefully now. There is still a lingering uneasiness and general sense of awe for those who can cast spells.
The other races have an equivalent to the human colleges. It’s very difficult to teach as after the catastrophe most knowledge of magic was purged. It’s intentionally kept rare now for safety and defense purposes.