I like to think of it more as harvesting. Yes, you're ending their life, but we were meant to be that way. Anyways, I think the word "harvest" sounds a lot better then the usual "murder". I've shot countless squirrels, raccoons, and rabbits. Can't remember when I started shooting small animals, but I do remember shooting my first gun when I was four. I shot my first deer at eleven, and have been hunting ever since. No luck this season, unfortunately. But I have gotten three deer to date ^^ And, we make our own jerky at home. It's a bit... Messy, but it's awesome. I hunt with by bow, crossbow, and gun.
Back on topic, I liked how they included Connor's whole back story in the game. It was very interesting, and surprising! Especially when we found out that Haytham was a TEMPLAR...