Sorry for jumping the gun on your comment.
I, too, have many Iranian friends and wouldn't wish death on innocents. If it had been a military plane on a mission to hurt Americans then it'd be a bit different.
I don't remember any of us celebrating when the U.S. Vincennes accidently shot down an Iranian passenger jet during a firefight with Iranian boats in the late 80's early 90's.
I just remember the horror of it and the horror other Americans expressed when it happened.