@joelfreak - sorry about your experience. Where are the American Disability Act supporters? It makes me mad that people with various medical conditions are singled out.
Take comfort in knowing that people without diabetes sometimes face the same treatment as you. I guess they all see us as cattle that need to be herded through the checkpoint. They expect us to happily "moo" along.
Several people that I know that have flown recently in the US have said that the scanners are now the norm and the WTMD is a rare thing. Funny that in Canada, this isn't even a big deal like it is in the States. They don't use the scanners are often and they don't see opt-outs as a "threat". Also, they don't use the backscatter machines.