walterthesofty - you are a funny one!
As the previous poster said, it is common practice to introduce oneself using one's name, whatever the social context.
On every flight I have taken this year (all from Luton, coincidentally, so it can't be a "Luton" thing
), the captain introduced himself by name. That really is the "normal" way of doing things.
Your second comment demonstrates you do not understand the unique nature of the relationship between the captain and passengers in comparison with other members of staff who are part of flight operations. And yes, the captain's name is more "relevant" than the baggage handler's, not least because one is legally in charge of several hundred people and the other is not.