There are doubtless reasons why some people refer to themselves in the third person. But outside of books, where it's sometimes used as a literary device, I'm not sure there's ever a good reason to do so. For it makes the speaker sound (at best) like an idiot; or, more worryingly, like someone with mental health issues (a sign perhaps of dissociative identity disorder).
Thus, whilst not encouraging anyone to use 'I' other than sparingly and ironically, I would strongly advise those who frequently practise third person self-referral without embarrassment or any comic intent, to reconsider - unless, that is, they don't mind being thought to have a borderline personality (like Donald Trump, for example, who frequently refers to himself in the third person).
Having said that, I'm told by someone who understands more about this subject than I do, that some individuals find speaking in the third person helps improve their self-esteem, better manage their thoughts and feelings, and successfully navigate their way through complex or stressful social situations.
In other words, a little psychological distancing from oneself (and one's anxieties) can be a very positive thing. Stephen didn't know that - but it seems to be common knowledge within certain Eastern religions, including Hinduism and Buddhism, where it's viewed as a sign not of madness, but enlightenment. Jnana yoga practitioners, for example, are actively encouraged to refer to themselves in the third person; for wisdom, it is said, results from the mind's transcendence of ego.
In other words, a little psychological distancing from oneself (and one's anxieties) can be a very positive thing. Stephen didn't know that - but it seems to be common knowledge within certain Eastern religions, including Hinduism and Buddhism, where it's viewed as a sign not of madness, but enlightenment. Jnana yoga practitioners, for example, are actively encouraged to refer to themselves in the third person; for wisdom, it is said, results from the mind's transcendence of ego.