if you are trying to kill someone, then there's no other explanation for it. unless you just liked the idea of them being dead, there's not any reason you'd want someone to die
In your view that you're expressing, that actively killing someone (and thereby wanting to kill someone at that time) means you must enjoy killing, in order to do it, you're forgetting the idea that you can kill out of necessity.
You may scoff that this is an unfair comparison, but it's not;
I do not like baked beans. I can not stand the taste of them, and would happily never have them in my presence, or be in a situation where I am expected to eat them.
Were I in a situation however whereby I was trapped somewhere (imagine what you like, whether it's a flood, or snowstorm, or nuclear holocaust) and food supplies were running very low, and the ONLY food that remained were tins of baked beans, I would consume them. The taste would completely dissatisfy me, and I would take no pleasure from eating them and would not enjoy the situation. I would still eat them however because it is NECESSARY for me to live.
Parallel to this is the situation where I am attacked.
In my struggle to defend myself from the attacker, I am forced due to his sheer determination to do me harm (or even kill me) to injure him to the point of killing him.
This could be because I beat him to death (this doesn't necessitate him being incapacitated and me continuing to hit him, where you might assume I continue out of enjoyment), or I stab him, or I strangle him, or even that I shoot him.
I don't have to enjoy killing the man to do it. I need only to feel the necessity to kill him, in order to protect myself (or even my loved ones, or posessions).
There's also the fact that the natural Fight-or-Flight mechanism takes place, where I reactively fight without real awareness of what I'm doing, due to the sheer pumping of adrenaline through my body. It's an animalistic response, the exact same as two lions fighting. And even though it is animalistic, we as humans can still use tools in this moment of reflex, which includes knives and guns.
It is not at all required that you have to enjoy the killing of another person in order to do so.
I'm not sure I can convince you of that, but I've tried.
But I am very happy to say that I am certain that were you in a panic-driven life-or-death situation with an adversary, you would try to cause serious harm, and you would not be in complete control of when you stop. You would fight until you could no more, or your opponent could no more, even if your opponent fought to their death.
a plane full of passengers will certainly be able to overwhelm the hijackers, and it's probably not terribly unlikely that at least one person on the plane would be able to land it relatively safely, even if they had to be walked through it by another pilot.
This isn't actually all that likely.
People afraid of gunmen will stay down, even if they vastly outnumber their hijackers. Sure they could all run at the hijackers and take them down, but they all know that some of them could be killed, and most people won't take the chance that it's them.
As for landing a plane, pretty much impossible.
You NEED to have experience on a commercial passenger jet to have a hope in hell of flying the thing and landing it.
There have been studies and experiments where people who already have training to fly light aircraft have been guided to try and fly/land a passenger jet simulator, and they've failed miserably. (I'm not going to look these up now because it's very late, but they're out there if you're interested).
Your alerting people on the plane may do absolutely nothing, particularly if the hijacking has already started to take place.
