Couldn't agree with you more, mate. My friends (ages 40-50) who own guns are all sweet guys, family men, mostly from the midwest, grew up as outdoorsmen, a few are ex-military. But all of them are conservative, upper-middle class (at a minimum), have daughters and are worried about the potential for a home intrusion -- despite the fact that we live in one of the safest counties in America. Do I worry that any of them will slowly go nuts, or could reach for a weapon in a fit of rage? Absolutely not, and they would all characterize themselves as anally-responsible gun owners.
Here's the thing though . . . people change. It only takes an instant. But guns don't.
As I wrote elsewhere -- these fellows own guns because they don't trust others. But others are supposed to trust them when they say they are responsible gun owners. That line of "logic" makes no sense to me.