All of my guns have been bought from gun shows. I have had to go through the background check for every single one. The so called "gun show loop hole" is that if my grandfather wants to pass on a rifle to me, I dont have to go through a background check for him to give it to me. That is a private transaction. If a person sells guns for a living, they must meet numerous federal requirements and keep insane amounts of records on every transaction. Private transactions between individuals like grandfather to me or my brother selling his gun to his neighbor do not require background checks because neither my grandfather nor my brother are selling guns for a living.

Oh and I noticed you left out the part about the estimated 2,000,000 defensive uses of firearms in the US each year... look that one up on google, you'll see what I'm talking about.