The terrorists have won.You don't have to bring down an aircraft to make flying a nightmare.
I know this sounds insane and the Terminally Stupid Administration will not allow it, but if someone came up with a "low security" airline, where screening was done by the airline itself using their own guidelines, I would be an enthusiastic customer.
We only need two things, an airline that values it's customers but is not willing to lose any planes and passengers who are alert and ready to take on any threats in the air. The latter attitude has been there since United Airlines Flight 93, the former is a mirage.