He's probabaly young, It'll pass unless he's dumb too.
I pray every night I didn't kill anyone I got in a fight with.
Anytime I ever get involved, or almost involved in a fight, I either never fight back, or merely push away. Simply put, I hold myself back from fighting. For good reason too.
Let me put it this way; although I'm not built like most people tend to be, I'm friggin durable. I think I've been sucker punched before, only to remain conscious still and nonchalantly walk away while my opponent was doing his whole "Punk! You wanna mess with me!" routine. I tihink one other time at a nearby tavern, I was giving my opinion, some jackass took it completely out of context, taking a general statement completely personally; again, with the sucker punching to a headlock, His pummeling was equivalent to a head massage. The only punches that actually did any damage at all were those that missed his target completely. All this happening while my "friends" merely were telling him to stop. I had to literally pull myself out of his grasp after maybe the 20th hit, with NO help at all from any witnesses (as well as people I knew since elementary school; who also promised their loyalty to "fight for you" or words to that effect). Yeah... And it was nearly a carbon copy of prior incidents with similar quoting as I merely responded with "Are you done?" and left to grab another drink a he gets kicked out. No response or contact from anyone else for the rest of the night apparently.
I tell you that to explain my durability, and attitude towards fighting. Now imagine all that concentrated into a well-aimed punch or kick. To put it this way, I only need one shot to end a fight. I hold back in fear I might incapacitate, disable, or kill my opponent entirely by accident.
To kill as a meaning of life, fight in a war would be your destiny methinks. But I don't think that's a better way of putting it. At least your "meaning" would be put to use.