Rock Throwing

Have you ever considered just how little we as humans, have evolved in our offensive weapons? Consider: pre-historic caveman discovered the rock. Handy little item, lying about nearly everywhere, different sizes to fit all hands. He learned to throw it, or simply bash whatever was within arms reach, usually another caveman he disagreed with. But being within arms reach meant you could get bashed too... so some clever fellow stuck his rock on a stick and created the ax. Now he was just out of arms reach and could still bash the other guy! But wait, the other guy tied his rock to a stick and created the spear! Darn it! more reach! Not to worry though, the arms race was on. next came such brilliant ideas as slings, arrows, and even catapults. But still just rocks being thrown about, albeit with more accuracy and frequency.
But, you say, "What about the gun?" What is a firearm anyway? There is the chemical activity of the rapidly burning gunpowder, but all it does is serve to throw a very special rock (lead) farther and faster than ever before. Not so evolved after all are we?
Chemical weapons? A bit of progress there, but so highly specialized and difficult that the average joe cant whip up a batch of anything but the simplest toxins.
Nukes are even more exclusive. Very effective, but really only a big fire. And we both know how long fire has been around.
Biological? Been around a long time, and is only refined, not really changed any more than the rock. Ancient peoples knew that a dead rotting animal thrown into a water supply would sicken or kill their enemy. Often, disease ridden individuals from their tribe/clan/city would be sent to live in the enemy' camp/village/city and spread their deadly disease before dying. Medieval sieges were sometimes won by tossing dead cattle over the walls into a city, sickening and weakening the inhabitants. Now we have the process refined so that a small container has enough concentrated pathogens to wipe out millions. But they are all naturally occurring bacterias or viruses, only the delivery/refinement method has changed.
And here we thought we were all modern and grown up didn't we?