If they don't screen everyone chances are good that they'll miss terrorists.
Besides which, it is NO BIG DEAL to go through airport security.
As a matter of fact, I'm more than happy to do it, and to be wanded...... middle-aged, female WASP that I am........ to make everyone more secure.
Wasn't that a song by Cheap Trick; "I Wand You To Wand Me"?
[ducking behind desk to evade incoming]