I just realized that I've traditionally avoided Mage/Templar threads, because I don't really see it as an either/or issue, and didn't see the point in getting caught up in taking sides.
But since I dun stepped in it twice, I guess I'll add my two cents:
My DA 2 playthrough was decidedly pro-mage. They did kinda hit us over the head with the Templar thing, and the writers went out of their way to simplify and unbalance what was actually a fairly thought-provoking conflict in Dragon Age: Origins.
In DA:O I took a balanced approach, which was an option. I saved the mages, but that wasn't a pro-mage position, since it saved the Templars, as well. I saved both Connor and his mother (only possible by saving the mages) but that wasn't "pro-mage" or "pro-blood magic" since, again, doing so saves everyone.
In DA 2, they chose to forgo any kind of balance, and insist on a rather immature Black/White "All philosophies are diametrically-opposed" position. This basically forced players who wanted to explore role playing options into making extreme choices, even when logic dictated that there were better ways to address almost every situation than simply picking one side and declaring it "right" and the other "wrong."
To be honest, I really felt that the writers were overtly pushing most players into a Pro-Mage position by layering in more and more extremity to the Templars, until it reached a point where I just threw my hands in the air, and stopped caring about the story, entirely.
I hope that trend does not continue in DA:I, but the truth is, I fully expect that it will (one of the many reasons I won't be buying it for a few weeks, while I wait for enough reviews to come in from players who actually finish the game.)
All of that having been said, I'm not bothered in the slightest by anyone siding with the Templars, be it for reasons of exploration, curiosity, personal belief, or just a completionist who wants to make all the choices over multiple playthroughs.
In fact, I really couldn't care less how someone else plays the game, or what choices they make. I'm not sure I can imagine how it would ever impact my own experience of playing the game.