Can you imagine if actual DA style mages started appearing in the real world?
Mass hysteria.
Think less Harry Potter, more X-Men. Except 10 times worse. People would be demanding the harshest most authoritarian measures possible. The amount of humiliation and submission to authority that we're currently seemingly willing to accept on the basis of the statistically minor threat of "terrorism" is just a hint of what would happen. Fade demons? Abominations? Yeah I'll step in that body scanner no problem! Also that guy there looks a bit "magey", might wanna interrogate him for a few hours...
Of course Thedas has had the "magic issue" to deal with supposedly since time began so all their societies have adjusted to it in various ways, the Templar/Circle solution being one that seems to have held up fairly well so far.
In the game I can never quite get over the obvious dangers of magic users enough to support "freedom" although from an "in-universe" perspective it would entirely depend on whether you happen to be born with magical abilities or not. The Qunari "take no chances" approach would appeal to me as a "mundane", whereas for a powerful mage Tevinter might seem the shining future of humanity, under the wise leadership of superior beings. In the end the fairest solution available surely has to be some form of Circle/Templar. As much personal freedom as public safety allows.