Shaky,
You write above, "I suppose Greg's bottom line was that gun ownership can be misplaced toughness. A macho thing."
With that, I can agree, both that this seems to be one of his "arguments" and that this is true as a general principle. There definitely ARE people who buy guns for the purpose of making them feel tougher than they actually are, or to enhance their odd perceptions of what makes one macho.
However, I would only ask, "Do not many buy cars for the same reasons?" "Are there not many who drive erratically and irresponsibly so they can 'show off' their masculinity in some way?"
Given that there are so many, MANY more people killed each year with automobiles than with guns, and that car ownership does not even have a BASIS for specific Constitutional protection, why would anyone go after gun ownership instead of car ownership, if the real problems were those expressed by Gregg and cited by your assessment of his argumentation? That just doesn't make sense to me; does it to you?
You also wrote, "In any case, I'm one of those people who try to see both sides of an argument before making up my mind." Me too. I never like to make up my mind until I have all the facts of the situation at my disposal. However, BECAUSE I do that, when I have made up my mind, I am hard to convince otherwise. Gregg's assertions/condescentions/personal attacks certainly bear no weight as evidence that I have made a faulty decision on this issue; that's for certain.