Five seconds ago?
By The Bloody Nine's metric, I suppose it's about a year and a half ago.
I was raised in a similar environment, Jeade. It's taken a decade to be able to talk to strong religious believers without dismissing them outright, except when it's directly pertinent. That's a change, like others that happen every day. I don't know if there is an age where I became 'me', and I'm on the wrong side of 25. Like you, I've moved away from pacifism to something less pacifist. Besides social issues, I'm more concerned with implementation of ideas rather than the ideas themselves.
The best way to judge this is to figure out if a passive watcher with access to every detail of your life would be able to accurately predict who you might be in five years with consistency. That's impossible, so the next best (still horrible) thing is to try and imagine if I could've seen who I would become at any given point, and what I would be most surprised with.
There are times when you get to see people who you once knew you well but haven't interacted with in awhile, and that seems like another decent gauge. You've all mentioned online records of past interactions, and admittedly those are usually the most surprising, since it's often unequivocal proof of an entirely different thought process.
Few elements have accompanied me throughout my life, besides a fierce anti-authoritarian streak, a disregard for tradition, and restless curiosity. And the first two didn't manifest until I was, oh, probably about ten.
However, if I am the same person next year as I am today, there's something wrong. You see, I'm not quite smart enough to have it all figured out. I hope I look back and see an idiot, because if I do not, then chances are...I'm an idiot.