When I was a lad we joined out of sense of duty and did not constantly look over the fence to see if the grass was greener.
While I agree Tony, some would say that this sense of duty is not reciprocated by a feeling of a sense of worth by our Lords and Masters. The continued erosion of Ts & Cs, new pension, NEM etc clearly illustrates the regard in which we are held. Loyalty used to be a two way street. Sadly, not any more.