Triple H said:
I would probably stop my fellow team mates from killing. IF they tried it would attempt to stop them.
This is going to be the problem, since the other players are unlikely to want to except the attack penalties for striking to subdue.
They are also not going to want to escort a horde of prisoners which will be bound to occur if you don't kill them.
They are unlikely to want to leave enemies tied up behind them to escape and stab them in their back.
Its not practical for you to leave villians alive, Fantasy settings do not have the huge jail facilities or the legal set up to detain the huge numbers of orcs, bandits, goblins, etc. that the average party fights in the course of one adventure.
Even if they did what party wants to lead a group of hog tied prisoners back to town after each combat?
Think about how the arguements would play out, they will have to end with either your character leaving the party or your character changing his point of view. In either case that point of view is not suitable for an adventuring party so DO NOT bring it to an adventuring party to start with.
If you want to be "that special" run my idea of a cleric that will not strike other intelligent beings (to keep his soul pure), but doesn't object to others doing the dirty work, as he understands it is necessary.