If even a 1/4 of the passengers on 9/11 had been carrying personal arms on that day, New York would still have it's old skyline and 3000 people wouldn't have lost their lives.
On any given day, a random shooting happens, how many fewer would have died had they had the MEANS TO FIGHT BACK.
It is attitudes like yours that kill so many people. Mine wants them to have the option to not be a victim.
So now you raise the threat that "pissing off" heavily armed people could/should get you killed. And you believe that to be a "good" thing. Remarkable.
So had guns been allowed on planes the hijackers would have had them as well and it would have made their hijacking even easier since they KNEW what they were doing and other armed people would have been caught by surprise or blocked by hostages from taking a shot. I know you prefer silly macho fantasies to reality but don't expect those capable of thought outside of ideological rhetoric to agree. Oh, wait I forget you GI Joe wannabees would be sitting there with AK-47s on your laps just HOPING you get a chance to use them.
You don't get it about "random" shooting either. Most of those affected never even know what hit them much less where it came from or who shot. Sorry to apprise you of obvious facts but if the shot comes from a speeding car a block away it often isn't even seen by the victim. Rarely are there pitched battles between these gangs and even if there are which one would you be allowed to shoot at? Or does the prospect of being able to inflict carnage titillate you so much you don't care.