People have been killing each other since people exist yet an M30A1 rocket filled with 180k tungsten beads exploding above your city is much more effective than

People have been killing each other since people exist yet an M30A1 rocket filled with 180k tungsten beads exploding above your city is much more effective than a a dude silex knife. Should we give people military grade weapons ? They're going to kill each others anyways right ? Would you argue they're just the same and not fundamentally different ?