No. Assassination is wrong and illegal, and any potential gain from eliminating him was not worth the harm done between us and Pakistan.
Of course the American people overwhelmingly support Osama's assassination and somehow consider it to not have been an assassination - I'm not sure how else you can define a targeted military infiltration which kills an unarmed man, but American's aren't well known for logical thinking, and will continue to claim ignorance as to why or how anyone could ever be angry at them.
So, who really cares? We are long past the point where we actually think about anything that we do. Tossing away the rule of law, which is the foundation of our nation, so that we can cheer for a murder is grotesque.
From his perspective, it was probably the best way for him to have gone out - showing the world America's immoral face, as we consistently and continually do anything that we please regardless of costs and consequences.
Collateral damage? can't help it.
Rule of law? who needs it.
Civil liberties? necessary sacrifice.
Torture? sure, why not.
Rendition? sounds useful.
Illegal phonetaps? Says who?
Junk groping at airports? they'll get over it.
Illegal assassinations on foreign soil? he deserved it.
And all for what? Can anyone in this country put a single piece of evidence on the table that we are safer today than we were before?
And none of this has anything to do with Osama deserving what he got or not. It has to do with ourselves, and what we are willing to do. I believe there is a good heart at the core of America, but that heart demands that we are better, not that we succomb to the cheap satisfaction found in assassination. That day we failed our great heart.