A little off-topic, but maybe relevant to the website as a whole:
If killing people efficiently was a metagame, handguns would be a game breaker. They are easily available without raising much attention, require little preparation and/or skill to kill somebody (at least compared to any other metod), are reliable, not likely to hurt the user, easy to conceal, high mobility, can be used several times in any desirable timespan, have a very high damage output compared to the amount of power they require to operate, can kill at a distance, can kill selectively, and can be used by almost anybody, in almost any state of mind, in almost any environment.
In short: Guns for Ubers.
No other known method or item can claim the same efficiency of killing people. I believe the world to be a slightly safer place without them. Or at least, I'd prefer the government to have the "monopoly of violence" as Hobbes (or Locke?) put it. I don't think having highly-efficient murder items being strewn all over the civilian society is a very good idea.
Having them in games, however? Actually, I'm all for that. We all get those moments where we just want to punch somebody. Why not blow off steam by smashing a virtual avatar of some stranger in a game? It's certainly better than doing it in real life. At least games keep people occupied enough not to do other stuff. Graffitti crime, drug use and youth gang violence has dropped drastically over here since the introduction of video games. Give your average, bored teenager the choice between sitting inside shooting people on a screen, or freeze his ass of outside trying to spray-paint a dong on a school wall, which he knows will get him into trouble. I think most people would choose the former. Video games are a safer spare time occupation for youths than the stuff earlier generations used to do. Also, while not entirely like real life, guns in games can "quench the thirst" many young males have for violence. They may not have the recoil or the loud bang as real guns do, but in a virtual world you can be a lot sloppier with safety, you don't have to clean them, and - while somewhat brutal - you can see the effect they have on people. Without killing or hurting anybody.