LOL, I stay away from the 9mm vs other arguments. Just about any caliber has stopping (they don't want to play anymore) capability. I like my .357 because it is highly regarded as THE round that will take the gumption out of a bad guy. Secondly, since my revolver can handle .38 spec, I can spend more range time with cheaper ammo.
Really to each their own! Now as I said I like my shotgun because not only will take the gumption out of a bad guy it tends to empty their bladder and bowls when confronted with it!