They are primarily for panty waist libtards who don't want to actually hurt a dangerous two or four legged critter that will kill you. Libtard politicians mandate it for crowd control instead of actually killing a murderous crowd. When you use military forces to do a Law Enforcement function, you have to go counter to a normal military mission and NOT kill.
Rubber bullets and buckshot are LESS lethal, not LESS THAN lethal. They are still potentially lethal.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball