I don't know if fear is the right word, but I never feel like anything out in the world is particularly challenging or a danger to me. There are no WoW style high level enemies patrolling zones that will destroy you if you're in the wrong place at the wrong time. The only time enemies can be a threat is for certain quests where you have to go through an area of hostile enemies to reach a point and rather than fight your way through, you decide to take the risk and run straight to the objective and pray you can take whatever is still following you when you get there. That's about the only time the world ever "felt" dangerous to me, when I put myself in that kind of situation intentionally.