It looks weird being on the left side of the bow, but if you think about nocking and drawing the arrow, it would be smoother having the shaft on the left side than the right, not to mention balanced. Plus, you look down the arrow to aim, and it would be tricky/inaccurate/awkward if the arrow was on the right side. Yep. That's my two cents xD
Best... game... EVER!!! (Whenever I say this, people stare at me, like, "Whoa, this chick plays Assassin's Creed III?!?!" with a look on their face like this: o_O.) PS: There's a cheat where you do some crap out of bounds, and you get to be Lindsey Stirling.