If you heard that someone had murdered Osama Bin Laden, would you feel bad that Bin Laden was dead? Or would you be happy couldn't harm any more innocent people?
I don't see how Tiller's death is any different for anyone with conscious, someone who realizes killing fully-formed babies isn't any different than killing an infant. But, apparently, you don't believe that late-term abortions are the same as killing an infant and that is what is abhorrent.
And, no, being glad that man won't be able to kill any more innocent human beings isn't the same thing as approving of someone murdering him. Only the government and God should be bringing murderers to justice.
You are still fooling no one.