Not arrogance at all, reboot... just waiting for someone to justify the procedures. So far, nobody, including you, can come up with a sensible reason why pilots are searched. So instead of offering uninformed comment, try answering the points.
Like you, Murray_NN chooses to cover his inability to answer with childish point-scoring... such is the quality of some security staff...
By the way, a lot of you need to learn the difference between legitimate question and personal attack. As it happens, I go through security several times, every working day. I am ALWAYS courteous and helpful to the security staff, who after all have a job to do.
That doesn't change the fact that a lot of what they do is quite pointless, and the proof of this is the inability of one of their number to come up with a single, solitary good reason for what he or she does.
Allegedly professional people should be able to distingluish between useful, effective action and pointless window-dressing. So, without a lot of hope, I once again ask anyone (even Murray) to come up with some good reasons for their actions.