So first they make life difficult by making us remove more and more items of clothing, so in the end we are actually happy to let them see us naked as long as we don't have to take anything off? What's next? Since they can already see us naked, they might as well... (fill in the blank with your own vision of the future). The fact is, once they take a step into invading your privacy, there's no going back, or do you think that one day "when this is all over" we'll go back to the way things were?
I am myself a frequent traveller in Europe and wonder why at every airport I go to, there are different security standards - sometimes even in different lines at the same security check at the same airport (the line next to me had to take off their shoes, ours didn't - lucky me). If my watch causes the metal detector to go off at one airport, but not at another, I guess it's because they are using different settings on their machines, but what does that say about the overall security of flying? Are we safer now that the main task of the security staff is to remove our bottles of coke from our hand luggage?
Will we be safer if the security staff can see us naked?