A question related to morality

This is some moral dilemma?
You kill that person without even a thought

This is some moral dilemma?
You kill that person without even a thought
No matter how 'obvious' an action may seem, if you do not provide arguments in favour of that action, and just say "Do it", then your post is completely useless.

I see so many questions like these around. It is a very difficult one. Perhaps there could be a third option, in sacrificing yourself.

So hypothetically speaking....right now a man in on top of a child and the man has a knife
The man is actively trying to kill the child with that knife
If the man drops it and the child uses it to stab and kill the man....the child is worse off than if he had simply allowed the man to stab and kill him....correct?
And you people wonder why China will one day enslave you all?

So hypothetically speaking....right now a man in on top of a child and the man has a knife
The man is actively trying to kill the child with that knife
If the man drops it and the child uses it to stab and kill the man....the child is worse off than if he had simply allowed the man to stab and kill him....correct?
And you people wonder why China will one day enslave you all?
Actually, I would argue that the child would not be worse off in that situation because it is self defense. The case that was being discussed did not involve someone actively trying to kill someone.

Kill an innocent
Or everyone dies
Perhaps the better example is the train that is barreling down a railway to a group of ten people. You are standing on a bridge over the railway and you have the option to push a fat man onto the tracks. Maybe we can't jump ourselves because we are not heavy enough to stop the train. So there is a clear option. Take no action and the ten die. Push the man over and the one dies, but the ten are saved.
A bomb is about to blow up, it would kill every single living being in existence, and the only way to stop it, is to kill 1 human being who doesn't deserve to be killed.
You have 2 options:
#1 Don't kill the human because you don't have the right to do that?
#2 Kill the human to save all other living beings. he/she is going to get killed no matter what, so why not save the other living beings, and make sure the least amount of people get killed?
What do you think is the right choice?
(Sidenote: there is no other way of stopping the bomb, and you know that there isn't).