Like most everything else these days the 2nd amendment is usually interpretted to suit one interest group or the other. Most of the hoopla I think is by those who fear that the government will confiscate their guns. That has happened in different parts of the world with disastrous results when you look at crime statistics. I don't really think the majority of gun owners want an arsenal and but want their freedom to keep their guns. It is the fear of confiscation that I think spurs so much interest in guns.

At the end of the day you have the right to have guns but have a responsibility to use them within the law. The second amendment does not give anyone a license to stockpile machine guns and then go on a shooting spree. Make anything illegal or tightly regulated and the public will want to stock up on it.