Why do you have a military?

Ever since the Earth's human population developed into societies, there has been some type of military. It seems that groups just can't get along as we would like. There is always a bully that wants what you have. In order for you to keep what you have, you must be willing to fight for it. Sad but true. The weak have always been preyed upon by those that thought they were stronger. Look at some of the wars and conflicts that are going on today around the world. Some countries that don't have any military have been abused, robbed, killed, enslaved by some other country who had the strength to take what they want. Countries that have the strength to stop them also have a moral obligation to help the weak. We also have a right to protect our own land and people. Because there is always a bully, there must always be a protector. If a bully attacks a weak country then they can only get braver and stronger, and it is just a matter or time before they try a larger country. If you see a friend being beaten, will you muster the strength within yourself and come to their aid? Or will you turn away and pretend it didn't happen? If someone bigger than you attacks you, will you lay down and give up? Or will you defend yourself? In a "perfect" world, we would not need to have militaries. Until then we need to be able to protect ourselves. We should be very proud of those who serve, to fight injustice and terrorism and to ensure our freedom.