It would be interesting to see what the people who bitch about security would say if given an alternative.
"Yes Ma'am, you dont have to get scanned, patted down, or even have your luggaged x-rayed. But no one else on that particular flight will either...passengers, flight attendants, passengers, airport workers, third party vendors. I know you say that the TSA dont catch terrorists, so you should'nt have to worry about anything. Your flight is over at that gate. Enjoy!"
I think peoples tune would change pretty quick. Are the security hoops we have to jump through a hassle sometimes? Sure. Are they effective? Maybe yes, maybe no. But they do install a sense of security in the majority of the population, and that sense of security is necessary to keep people flying, and to keep the entire airline industry from going bye-bye.
You dont have to fly. If you want to fly, this is what you must do.
Just my 2 cents.