It would be simple if the whole population decided one way or the other. But since they are split, there is no easy way to decide- thus the rather protracted and seemingly useless peace process (note "Seemingly" useless, in that here in Britain, all you hear about are the collapses in the proceedings).
I sometimes think that our troops should pull out all together, but that would not only lead to violence in Ireland, but on the mainland as well. I personally don't think power sharing is the way forwards either- the representatives from one side or the other are always trying to get one over the others... suprisingly like modern democracy all over the world, on closer consideration. But still, the hostilities there are just under the skin, and are liable to break free.
It is definatly a conundrum, for which I have no answer. maybe power sharing is the way forwards, but I personally don't see much coming of it unless they put aside their differences. And, well, I'd probably be more likely to see Satan skating to work than that.