Guns. An invention which benefits mankind or harm us?

The tragedy that happened at Virginia Tech is not simply just a case whereby the general public starts grieving over the victims and grumbling about the level of safety and security in their society.
Its leads us to another issue of the ease of availability of guns to the mass public as long as you have the money. Even though, statistics have shown that the number of homicides using guns have decreased dramatically over recent years, it does not mean that they are considered as isolated cases.
Gun is a deadly weapon and a double edged sword. It can be used to protect the civilians in the hands of a policeman but a totally different object when it comes in the hand of a criminal.
The question to ponder is not the number of dead or how the figures of homicides have decreased, but how in the first place an average teenager of an ordinary American high school get his or her gun and start on a killing spree? Most importantly, why do they have to purchase such weapons of mass destruction in the first place?
By common knowledge, all these guns are obtained from the black market. As long as you have the money, one will be able to purchase a gun. No wonder newspaper reports that it is easier to get a gun then a driving license as driving license is obtained only after one has passed the test under the supervision of a professional after paying a considerable amount of money. These trades between the buyer and seller are carried out in the dark corners of the society which are most of the time unreachable by the authorities. It does not mean that passing more stricter laws on the purchasing or production will control the amount of guns sold to the public. As long as the demand is there, the supply side will always find ways to obtain goods for these consumers.
Let us trace our way back to the demand side for guns. Why in the first place do these people want guns? Some say that keeping a gun by their side gives them defense against anyone who wants to hurt them. I believe this is a job for social psychologist to work on. What exactly is the mind set of these guns purchasers? The only thing I can conclude is that people nowadays are complex, highly intelligent organisms, which will always find fault with each other, and in some extreme cases, exterminate one another.