I read that story a while back, and it sucked. I empathise with your anger and sympathise with your loss. But I am trying quite hard to write a comment to say there is another way, and it is better.

> you can try and hurt them twice, no matter the cost. Culture choice.

In trying to hurt them twice, can you hurt them for what it costs you to do so? Or do you just have to pay that cost out of pocket? And if you hurt them twice, but they only directly did one bad thing to you, can they hurt you back? And can you hurt them back for that? Most wars are founded on logic such as this.

If you are talking Jewish philosophy, what about Job (the book is newer than an eye for an eye, but Job himself probably lived before the Torah was given)? I believe Job says (amongst other things), "Life isn't fair. Good things happen to the bad guys. Bad things happen to the good guys. Accept that in the knowledge that God will make it right in the end."