He was not just responsible for 9/11, he's been the mastermind behind most of the terrorist difficulties in the last 10 years all around the world and 10-20 years before that. I think the conditions in which he was found (multi million dollar building while others are living/dying at his command) are quite telling about how he chose to live/die.

I don't think of it as celebrating his/an individual's death as much as it being the end of a serious problem but I don't watch/read news that looks like it might bother/upset me. I am glad his very serious, hurtful-to-world-peace leadership has been stopped and wait to see what develops next.