Also not a flame....
To be fair, I dont think Lowe's and Home Depot are responsible for the bad wiring that is done. Unsafe wiring is done by unqualified people.
After all, we are in America and you can buy electrical supplies anywhere. It would be impossible to regulate the sale of electrical supplies only to electricans.
Im not a big fan of those DIY stores and I try not to shop there, but they do come in handy sometimes.
As far as the uninsulated staples go, they should be banned in the next Code. I'm surprised that those stores even sell them. I have seen them there myself and I wonder who buys them. (I live in CT where they are never used.) Check out my photos "Bad wiring? What do you think?" in the photo section to see why not to use uninsulated staples.