Throughout this Shakespearean play it is obvious to the reader that they are observing a boy, unlike most, develop into a man, who again stands out amongst the crowd. There are certain qualities Hamlet holds that renders him undeniably relatable, and frankly agreeable.
Given the time period and values at the time it would be fair to say Hamlet exerts genius like qualities in his careful scheming. Though killing for honor was not unfamiliar at this time, it was more often done in a rash and animalistic way through war and gory bloodshed rather than plotting the death. The manner in which Hamlet goes about avenging his father is much more calculated and careful, than a typical revenge murder may be. As his heated anger for other unfortunate things in his life comes to a boil, like his uncle becoming his stepfather, hamlet is guided to not only avenge his father but to also fulfill his personal desires of revenge.
In modern times this type of killing would be done by someone of unstable mental health, and even in the play the famous words "though this be madness, yet there is method in't" were said, speaking to the strange manner in which Hamlet tries to murder his uncle. Though he is mad, there is method in it. Though he is crazy, there is a reason for it. Though he is psychotic, there is motive behind it.
Hamlet's deeper desire to kill other than for 'honor' in avenging his father, notions to a strange and almost erotic state Hamlet wants to achieve throughout the play by killing. He cannot be seen as a mentally stable individual.