Hi!
In the Farewell speech, Queen Elizabeth uses the first person point of view in order to allow her to share her personal thoughts and ideas.
She doesn't use her point of view to appear appear to be impartial or objective, as a first person point of view is known for being subjective. She doesn't use it to seem as though she’s observing from the outside because this is a characteristic of someone writing in third person as opposed to in first person. And finally, she doesnt say it to prevent her from addressing the audience directly because this is typical of a speech written in first person.
