I find it a little sick to celebrate the death of anyone.  "Justice" should not be dealt out by the end of a gun...it makes us no better than the terrorists who deliver "justice" with a bomb...   It seems a very stupid operation.   Killing him isn't going to change anything, he has ceased to be relevant, and no doubt operations organised by him in the last 10 years are in progress now.   Would have been better to capture him, and stick him in guantanamo than put a bullet though his head, just in terms of the intelligence you could have gained on future (an on going) operations.