Should I feel guilty?

[Spirit]

To make a analogy:
lets say we have a person A. U know that person will be killed tomorrow. Would it be correct to kill A now? After all he would die tomorrow anyway.

While that analogy drives the whole point into the extreme, it makes one point clear: Just because someone else does/will act immoral, does not justify your actions. No matter what they are.

Okay, so person A is going to die tomorrow. If you kill them today, you are taking away that one extra day that they have to live. One more day to tell their spouse they love them, one more day to tell their kids they love them, one more day to feel the sun shine on their face. But, for your extreme comparison, lets say that person A knows they are going to die and it is going to be a very violent and painful death, let throw a person B and C into the mix also. Person B, is willing to end Person A's life in a very humane and non-painful way (this being the buyer of the +9 axe to use for their on because they really need it). Person C, could care less about person A and decides they will kill person A in the same violent way they were going to die tomorrow (this being the person that wants to buy the weapon and resell it for thier own profit). Person A is going to die no matter what and apparently person A is going to die one day sooner than planned. Which is better?