Wait, that's INDIA, not the U.S. The size of this country is HUGE, yet LOTS of it is relatively empty. While the media reports would also make me believe, for about 10 seconds, that we sure seem to have a lot of 'crazy people,' here, my logic suddenly takes over and I realize that we don't have a monopoly on that, either. The number one killer in this country isn't violence; it's heart disease (see also obesity). The one thing that makes us pretty different than Canada is "gun culture" and our history of violence, in general. We don't have a monopoly on THAT, either.
There are far more violent countries. We just happen to get a lot more attention, because we have a lot more media outlets that make lots of advertising revenue by selling hyperbole of our being "the most powerful country in the world."
I think "obsessed" is a strong term. According to statistics, Canadians actually have WAY MORE guns than the United States (mostly hunting rifles). They just don't kill each other with them. Why this is, I don't think anybody knows. That's the magic question. But, it's the same question you have to apply to every other culture and country that uses guns. I think the U.S.'s gun deaths are significantly increased because of gang-related deaths, and that is due to the drugs trade which is very much like a 'war.' Compare it to, say, Iraq. Do they use guns in Iraq? Of course they do. They're not fighting each other with rocks. They're using guns. The gang members selling drugs in Chicago think of themselves as "soldiers" protecting their "turf" or "land" and they're going to use guns to do it. Anybody they kill who happens to be "in the way" is just "collateral damage" -- the same language that the military uses when innocent people are killed in wars. The numbers you see in gun death statistics are greatly affected by drug gangs. Compare that to the number of homicides in Mexico, Colombia, etc.
See also this.
As a comparison:
In 2012,
33,561 people died in traffic crashes in 2012 in the United States (latest figures available), including an estimated 10,322 people who died in drunk driving crashes, accounting for 31% of all traffic deaths that year.