I do believe revenge is the truest form of justice, though. If someone kills a friend/relative of mine, it's only fair that I kill one of theirs, or the killer him/herself.
Let me see if I understand this correctly. Let's say you're texting and driving, and because you're engaging in distracted driving, you accidentally run over my cousin who is cycling home from work. You would see it as the "truest form of justice" for me to commit premeditated murder against your mother as a form of revenge. As you said, since you killed one of mine, it's only fair that I kill one of yours.
If I were to die as a result of carrying out justice on behalf of someone close to me, I would view that as an beautiful death, and that's perfectly OK with me.
Is it equally beautiful if someone chooses to target your friends or relatives instead? Will those friends and relatives agree with you that
their own death (caused by
your choice to pursue revenge instead of another option) was a beautiful thing? Will their other friends and family agree that their death
their death (caused by
your choice) was a beautiful thing?
And before anyone mentions the "circle of revenge"; I don't deny that person's family/friends the right to seek revenge on me either.
Acts of revenge/retaliation/retribution don't form a cycle. They form an escalating system, because the person aims to hurt the other person
worse than they've been hurt.
I watched this happen most frequently in social circumstances. One person would unintentionally do something that offended someone else. The person who was offended would assume that it was an intentional insult, and would retaliate accordingly. The first person would find themselves as the victim of (from their perspective) an unprovoked attack, so they would retaliate, but to a greater degree than they'd been attacked. One act of stupidity would turn into an escalating spiral of revenge, until it got messy enough that an authority figure had to take notice (teachers, bosses, police).
Seeking revenge is
stupid and ineffective. It doesn't undo the original wrong. It doesn't gain appropriate restitution for the wrong that occurred. It doesn't prevent additional wrongs from occurring. (In a revenge-based society, it pretty much
guarantees that additional wrongs will occur.)