If every airport had scanners, I would have been subject to unwanted radiation no less than 10 times in the last 30 days... and that is not an exaggeration. I travel a lot!
x-rays are useful but dangerous tools. They should be used sparingly and only when absolutely necessary. I have a history of cancer in my family... skin cancer, prostate cancer... I do not need to increase my chances.
As for being groped as my only alternative... fuck you. I am 90% convinced that the "enhanced screening" techniques introduced last week were merely publicity to drive people to use the scanners rather than the alternative.
You cannot legislate crazy people out of existence. Somebody is going to get through airport security somewhere and take down a plane no matter what security measures are in place. I hate to say that, but it's true. x-ray every bag, make every person walk through a metal detector, keep your eyes open for anything out of the ordinary and do your best. Leer at or grab every set of genitals wanting to travel by air? You're out of your fucking mind.
That's my opinion.