Well they say a picture is worth a thousand words, so here we go (hope the mods don't censor me for posting nude pictures...)
As you can see, it doesn't leave much to the imagination.
Baron, if being seen nude doesn't bother you, that's good, and that's your choice. But there are plenty of people that are really bothered by it, and not being seen like that is their choice as well. Also think about how you would feel if this is your mother, your wife, your 16 year old daughter, or your 12 year old son. What if your mother has had a mastectomy? What if your Grandfather has to use a colostomy bag? How would THEY feel?
The constitution doesn't cover a right to fly, but it does protect us against unreasonable searches and searches without probable cause. You can argue that by choosing to enter an airport, you agree to give up that right. Well okay... What if the next target is soft - say a shopping mall. Do we have to forfeit our 4th amendment rights if we "choose" to enter a shopping mall as well. Take it a step further. One of the Mega retailers decides to use this system as "loss-prevention." They can now argue that you've agreed to give up your 4th amendment right by "choosing" to shop at their store. (don't imagine it would be good for sales, though.)
Take another situation. You are a rape victim going to court to testify against your attacker. But the court house is equipped with full body scanners (They're already installed in several courthouses.) Now the only way to testify against your attacker is to be virtually strip searched, or manually groped.
Is someone has already said, this is a very slippery slope.
I'm all for reasonable and effective security. But I believe this (and much the TSA does,) is neither. And as all of us who work this gig already know, the only way to make air travel 100% safe is to park all of the planes.