Friendship is Magic, and Magic is Heresy.
My wizards aren’t Maiar slumming it with the mortals. If they were, they’d probably start with a Blue-Orange morality from the jump. Melkor went Melkor because he was sick of Ilúvatar telling him what to do, and a lot of the Maiar went with him - perhaps most.Perhaps you need to re-read some of the old source material. LotR. the books of earthsea.
Ged would be a better example, but he was unique for his setting (plenty of other wizards of earthsea were straight jerks). Essentially everyone in Dying Earth is a jerk to various degrees - largely because there are few to call them on it.
As for sorcerers, I think it’s game rules once again; they’ve got access to simpler methods of getting what they want (namely a great Cha score as a base for social skills), and 15 spells just doesn’t leave a lot of room for the big one-once-a-year sorts of things; warlocks are in the same boat. Same goes for Warlocks, and once the archfey and celestial patrons are in the mix anything seemed possible.First of all, if that's your frequent character concept preference, nothing wrong with that.
I am somewhat not surprised that it doesn't happen when you play Warlocks, because each of their archetype already comes with a moral connotation. It is not mandatory to follow it strictly and even possible to roleplay against it, but I suppose in most cases it directs the player towards a certain alignment or ethics, which is not evil for all Warlock archetypes.
I am a bit more surprised instead that it doesn't happen to Sorcerers... I would think that between them and Wizards there is the same unspecified/open morality from the class description. I hadn't thought that being high-Cha could actually steer a character towards good. If anything, my typical mental image of a "Sorcerer" is actually darker and shadier than Wizard. First image that comes to my mind saying Wizard is a joyful grey-haired old person in starry robes and pointy hat swinging a sparkling wand to make children laugh, and saying Sorcerer is a crooked-faced gnarly-handed person looking over their shoulder while attending a boiling cauldron in a shadowy lair
It strikes me as more difficult to envision either a warlock or sorcerer (based on the rules) being as effective at breaking bad as the wizard.
I’ve also never really been much of a fan of the in game fluff around sorcerers, so I don’t play them as much. Born special? Boring. But that’s just my take.