Why?

I think that there is a very difficult problem in this story.

In this story, there are the following sentences.

Some people have guns.They use the funs because they want something.

Then other people get guns to light back with.

Now everyone has gun. and everyone forgets what they are fighting about.

I think that These sentences show the cause that "selfish behavior of people" and "war" is not lost all over the world.

The army is managing it all over the world so that people should not become unhappy by a negative chain now.

However, I thought that it might be a rather bad thing.

Is it impossible that all the people become happy?