Of course i can but now it isn't in case in fact i use actions of majority. Good or evil it doesn't have rly significance it is just morality demon won't care and won't see you as good or evil just as host.Pretty much even then "good" mage can cause as much damage not intentionally as "evil" mage intentionally.And to that point we have very very little cases we can qualify mage as "good" and colosal number that i would put as bad.
Divine was naive as hell pretty much we can thank her for current mess and mage-templar war that she caused not just by her lack of action (elthina v2 she was even compared to her in ME) but also stupid actions like freeing mages when war was over before it started.Not mention pretty much for entire series i only heard how mages are useful and to that point only thing i saw they were doing is causing destruction around or creating some kind of mess that we need to clean after them.Well wait only once time one mage was proved to be useful Anders and his clinic and guy later started battle in kirkwall and blow up entire building.
To be honest without mages and constant damage and destruction they cause Thedas would be in much better shape and technologically advanced.Simple blight are huge punch for thedas and they cause even more trouble.Mages could be easily replaced by technology in almost every matter besides short-term treatment and technology is more stable and safer than unstable mages.
And oh you mean like they are doing now?
As i said without mages thedas develops better technology and don't suffer constant damage caused by mages.
Yep and we can kill them instead taking to the circle as i said i have certain methods to deal with that but i explained that few times and now im not in mood to do that.
You don't rise to power and become as powerful as the Divine being naïve. Lord-Seeker Lambert and Fiona/Adrian caused the war, the Divine wanted peace. Sure, the world might be better off without magic but its a fact that it exists, and always will. You can kill every mage and have the war go on forever, and every time a mage is found there is slaughter (not just of the mage) and that will continue forever. Peace needs to be the final solution, not "kill every mage you find"
Also, I'm not so concerned about demonic possessions anymore. As we've seen, the veil has torn and demons are pouring in anyways, they have no need for a host now.
As Wynne said, Mages have always been pivotal in the battle against the Darkspawn. They are superior to Qunari technology. For every man a mage kills, some mage is healing or teaching somewhere else.
And if you don't want to fully explain yourself, atleast answer this; Why kill all of them? That solves nothing, other than forcing them to use the darkest magics to defend themselves. The mage will die, and another will be born across the world. Magic won't ever disappear, so killing every mage is impossible. What do you hope to gain from that, other than the deaths of thousands of mages and Templars and commonfolk?