I think what you are missing is that the 'security' that is being shown is just that, a show. How many blonde American five year olds and 80 year old grannies and MOH winners are terrorists? Did I mention the good looking ladies that are built oh so nicely that get felt up? They are not the problem, but they are the ones getting the scrutiny at the airports while it's not considered PC to stop and frisk every middle eastern looking man aged 25 to 44 who has been the freaking problem.
It's a security show and you are buying it.
I was just in DC and watched the biggest security farce in my life. They had a few hundred overpaid and underqualified 'police' in one building checking IDs when you entered. On my 3rd entry into the building I told them that I had no ID and I still got in. Worse yet, the drive in checkpoints were less than useless. On one previous occassion, I have had my firearm with me and I was never searched or scanned.
It's a joke, son. But some of us aren't laughing cuz it just ain't funny. It's just expensive and intrusive and does nothing other than make sheep like you FEEL safe.