Wulfram wrote...
Alistair does say that "becoming a templar was a decision made for me a long time ago". And that Duncan was forced to conscript him because the Grand Cleric didn't want to let him go.
Though Samson in DA2 does say that they don't stop you from leaving, except through Lyrium addiction, so maybe they've changed that.
It's worth pointing out that unhardened Alistair has all the willpower of a bar of butter on a hot summer day. The various codex entries are quite clear. While Alistair may not have had a choice to be a member of the Chantry (until conscripted), he DID have a choice as to be a Templar or not....Alistair is very bad at recognizing such choices, however, as Morrigan points out.
In Origins he didn't seem all that much at variance with Chantry policy on mages to me. He was very disturbed by the Harrowing he witnessed, but otherwise his reactions seem pretty much as expected for a Templar. Hostile to apostates and blood mages, understanding of the need for the right of annullment when talking to Greagoir
A true hardened Templar would insist on killing Conner no matter what. Alistair does not. Alistair loaths Morrigan, but Morrigan is a pretty unlikeable person. Certainly in the Fereldan tower, Alistair does not exhibit the Templar attitude towards annulment and is willing to take risks to show the mages mercy...not typical Templar traits. The one character in DAO that has the typical Templar attitude is Sten.
-Polaris