Monks don't fit my world either. I had a Player desperate to play one, so I decided that thirty years earlier a strange ship had been found drifting off the coast. On board were a dozen or so almost dead humans. They were rescued and revived, but were left (so they insist) almost without memories of where they came from. However, they all had some unique abilities. They were the monks. They settled down as a group in one place and have been there ever since. Any monk in my world lives in that one place. All monk PCs must come from there. And when this campaign ends that village/monastery is going to fade away into nothing. And then monks will not exist again.
Hokey, but it works.
Gilladian