@Flamekebab sometimes i see people who just - disappear - after a certain point in their lives. they turn inwards and never quite re-emerge, and their best/only memories are all of times 20-30 years earlier. even jeanette's own home page doesn't cover her life after university.
@vga256 I suspect it's disturbingly common. I am of the firm belief that identity building should explicitly be part of people's upbringing. Fading into the background as an adult is both bad for the individual and the society as it leaves people vulnerable to being preyed on by people selling an identity (pushy religions, political movements, over-commercialised sports teams, etc..).