It would be nice to pretend that we might all consider this and other instances from a logical point of view.
Culture:
US is different than any country in the world; the primary reason is because every country in the world is different from every other country; despite their seemingly similarities to outsiders. A good way to get your ass kicked by a mob of Thai men is to tell them they appear to be Cambodian; though I'll be damned to tell the difference.
One major factor about America, however, is it was founded upon, to a large degree, the idea that those who govern do so at the consent of the governed. Unlike all of the countries in Europe and Asia, Americans were not brought up under a culture heavily influenced by the concept of a divine ruler (King/queen, emperor, pharaoh etc.). Without the assumption of divine mandate, American's realize the man can be the author of his own fate and can gain power and influence based upon his ability to convince others of his cause (major aspect of first amendment).
Power, however, is jealously guarded and often abused. Those who obtain power will often commit terrible horrors to expand and then retain it; (Hitler, British Empire, Napoleon, Stalin, Imperial Japan, US expansion to the west).
There are several other rights given to individuals to prevent this from happening, the right to bear arms, the protection from quartering troops (taking your property and supplies for the use of troops), protection from search and seizure (further protection of your property from confiscation and even examination), and other amendments not enumerated here.
The one thing that brought these rights into effect to the individual was the second amendment; the right to bear arms. It was the ubiquitous tool used to guard and protect a man's property and extrapolated to protect one's community. It was considered the last line of defense of one's property; because to take one's gun it was often required to take one's life (the last and greatest possession).
This mindset, the inseparable connection of gun ownership to the protection and retention of life, permeates the US culture. How many US movies depict the defense of one's family, property, ideals, business, etc. without a gun? Not very many.
Now, knowing how gun ownership is so ingrained into the American identity one can begin to see how arguing against it is met with such passionate opposition by many Americans. The argument is received and interpreted as an argument against one's elemental right to defend everything one holds dear, which is horribly offensive to the American psyche. This makes casual examination of the validity of this aspect of our culture through an outsider's point of view and offensive exercise in futility.
If we desired, American's could examine the seminal cultural triggers of other countries through our own lens and produce the same level of cultural offense; British subservience to royalty, the siesta's obstruction of personal drive, the french avoidance of conflict, each offering many targets (as interpreted through the american POV) that has the opportunity to deeply offend. Perhaps topics for other threads.
(next are some illogical arguments used to argue against gun access)