Erani wrote...
If I'm a mage and constantly hearing about/seeing other mages that have been raped, or have gone through it, have been beaten or my child taken from me...all that resentment and hate will accumulate and ti might get so bad that one day I'll snap and give the demon the OK.
And you've gone abomination in an isolated area with trained individuals who are constantly vigilant for the abominations, any damage the abomination can create will be lessened and will kill mages and templar. Therefore, outside civilization remains unaffected and people can live their lives.
Introduce mage into "normal" society and we're facing much more severe problems, we'd encounter fantasy racism. Mage homes would be burned down, they'd be unable to do much. Considering how elves are horribly treated, you'd have to assume the incredibly dangerous timebombs are much more dangerous.
In the Circles, they don't have possessions of their own and they can't have families to care for. Demons have rarely nothing of theirs to exploit for an offer except for freedom, which the mages either yearn for or don't care because they love their life in the Circle (or they have freedom after living their life in the Circle and have proven themselves adept).
A woman outside the Circle who's child is sick, she's freaking out and her son will die if she does absolutely nothing. A demon appears and offers to cure her son in exchange for possession of her body, how many mothers would refuse this offer? The demon is exploiting something of the mage's life to achieve it's goal.
Introduce people who can influence people mentally with blood magic, summon demons, destroy entire villages, kill hundreds of people, can raise the dead and you'd see that mages aren't that nice to have wandering around. The average citizen won't sit there and take it.
Hell, even the countries with mage freedom don't have absolute control. They view abominations as the occassional disaster, they suffer the damage and live on. Not everybody in Thedas will view this as acceptable and I don't doubt the living victims who've had family / friends die to an abomination would approve of it either.