This is out of the blue. The actor claims all the travel filming and promoting new films is destroying his health. Viggo goes on to explain: "I have no plans to do another movie. I don't know what's going to happen. I'm open to seeing how I feel in a while, but right now I'm not saying yes to anything. My agent is like, 'Well, if you don't do anything, people will forget about you...' I just feel like I've taken on too much for a while."
Obviously Viggo's film schedule is pretty clear right now. Viggo has said he would at least like to be a part of an "Eastern Promises" sequel with director David Cronenberg and he would also like to come back and be apart of "The Hobbit" prequels.
Thank God for Viggo's will to return as Aragorn in "The Hobbit". No way do I want a recast for that role. Viggo owned that role. This retirement kinda sounds to me like a break, which is all well and good for Viggo. When it comes time for Aragorn and Gandalf to hunt for Gollem I hope he realizes break times over.