Stansted are excellent. No issues at all over nearly two decades there. Only crews with 'attitude' seem to have issues. You know, the ones who crack the same old one-liners that the security staff have never heard before! Relax, and be respectful, and you'll have a good day. There are jobs-worths in every industry, you can't change them so do yourselves a favour and just smile and move on. You'll live longer!
Ps. By the way, do you think terrorists wouldn't use a kid to blowup a plane? Dream on, they would in a heart beat. Security is only a deterrent.