Accidental violence or murder, and alcohol-fueled violence or murder should be subject to aggravated punishment

Violent crimes such as violence and murder leave bruises on society and its members.
The biggest characteristic of these cases is that perpetrators claim they acted [on impulse] or were in a [state of diminished mental capacity], and lawyers strive to secure such rulings.
Why? It is simple.
They are trying to avoid punishment commensurate with their crimes.
And then comes the obvious lie—one that everyone knows is false—yet
whether judges are actually falling for the lawyers' skillful defense or merely pretending to,
we have seen many instances where they cite diminished mental capacity or impulsiveness
to hand down extremely light and lenient sentences for murder, sexual violence, or assault
that victims, their families, and the general public find utterly unacceptable.
[The defendant caused the death of Mr./Ms. [Name] by stabbing, but at the time, the defendant was in a state of diminished mental capacity due to intoxication (he was heavily intoxicated, and the problem is this is not his first time);
he took steps toward victim relief (deposit/escrow);
he is showing remorse (submitting letters of reflection to the judge every day...);
and since this is a first offense, the sentence is reduced. Bang, bang, bang...]
The victim and their family wail in grief...
Only the criminal and the lawyers who profited from them are smiling...
I propose, and I demand—from whom? From the judiciary, politics, and administration of the Republic of Korea.
To those who commit cruel and indelible crimes against a human being and their family,
abolish the current absurd practice of devising and using excuses like "diminished mental capacity" or "impulsiveness" as convenient loopholes,
and instead, please create laws that impose aggravated punishment in cases of impulsive or diminished mental capacity acts.
Let even the most brutal criminals, even if they were in a state of intoxication, be able to say:
[I committed this murder while perfectly sober, I swear, please believe me].
Do this so that the victims themselves, their families, and all citizens
can feel that social justice has truly been served.