Do We Humans Are really in Need of Weapons?

We humans are living our life only for happiness, love, peace but why we need these Weapons? Sometimes only for defense! But i got some photos from which humans can learn the real place for weapons.

See the real Humans, who are themselves placing the weapons under the Bulldozer and crushing them into pieces coz they learned the real meaning of life...

Upps! the above pic showing that Weapons are no more..... :P