I never went through one of these and will never go through one. I rather get a pat-down.

I'm not that concerned about the health effects... This is a matter of principle. Everybody knows the security theater is just that... a theater. No need to participate in it any more than necessary.

9-11 by its very nature can never happen again. It could only work once, because the passengers still operated under the assumption that as long as they comply they will get out of this alive. After 9-11 this assumption is no longer valid and hence passengers will no longer comply.

This, btw, is exactly what brought the 4th plane down. Some of the passengers heard what happened over cell phone and then decided to do something about their own situation.

Edit: The usual spelling corrections.