Yeah, for me it was half novelty and half trying to figure out more about my father's side of the family. My father died just before I turned 13, when his father died about a decade ago I asked my great uncle what he knew about the family... he didn't even know his mother's maiden name which I only discovered at the end of last year, several years after my great uncle also died. I can trace part of my mother's side back with confidence to at least the 17th century, my father's family had gone cold in the early 1900s until I discovered my grandmother's maiden name.
Novelty is also why I want my whole genome done. Once it's down to a few hundred dollars I want to have it done and ultimately have it printed and put in binders, purely for the novelty.
All in all, probably not hugely worth the expense. But I guess the novelty of it was fun.