^ on the above, I actually think northern and southern Thedas have an identical problem with magic. In both Tevinter and Orlais, magic is an instrument of fear - as either a method of terrifying the general population into submission, and as only to be feared. Sure, possession is a genuine risk - but magic can also save lives through healing and protection, it can cast wards to scare off dangers, it can quench fires that would otherwise destroy villages, it can lift heavy objects which may crush a normal human being, it can do back-breaking work without any workers actually breaking their backs.
At the end of the day, magic's just a manifestation of power which is particularly dangerous. Like as Viv indeed argues, fire. But you don't lock up fire in towers. Fire is necessary to cook and keep warm - it's in hearths and in stoves and in campfires. If we want the status of magic to change, it just needs to become a normal and regular part of people's lives rather than inspiring supreme suspicion and paranoia - and the people of thedas do not treat magic as normal (and coincidentally, that is why I think the mage rebellion has been so violent and bloody and prolonged, in comparison to other revolutions which are bloodless).
Basically, there's nothing inherently wrong with power. The problem is the way power is treated, used, and divvied up between people. Currently, mages are treated like things to be feared - whether as terror-inducing magisters, blood mages, or abominations, which is precisely why they act like things to be feared. Mages are also cut off from ordinary people's lives most of the time and don't see how their experiments and their actions may actually impact normal people. In short, I think they'd take more precautions and would be more empathetic if they lived amongst ordinary people. And in turn, ordinary people would learn more about magic, and know when and when not to be afraid. The more you know about a kitchen - how to use and hold knives, how to use the stove, when/when not to touch things, the the less you are afraid of accidentally burning your hand off, right? (I'm speaking as someone who has only learnt to cook in the last two years, and for the first six months I wouldn't touch the oven). Magic's just a kitchen, basically. Or should be.
tl;dr Solas is right.