If technology continues at it's present pace, probably a good chunk of the family and friends will. Books (including diaries and journals) have to be parceled out (or carefully burned. Depends on family I guess). Pictures? Some get copied, some trashed, some sorted. Music? Movies? Health records? Incriminating federal phone taps? So it goes for most of a persons records of life.

But now? Lot of crossover happening. Photos? Digital. Home movies? Digital. Diaries/journals? Okay, still mostly paper but I know several kids keeping stuff on their systems and I've started keeping more and more records myself on a tablet . If you also add in a possible library (both eprint and video) and the continually increasing size of storage why wouldn't someone be interested in your hard drive when you check out? It wouldn't take much room and could be useful in the future.

Plus it's the sort of packrating you don't have to explain to people coming over. (Unlike, say a large collection of hand-carved decorative cuckoo clocks from your grandad on the walls of your server room. Er, not that I know anyone with them.)

Seriously, a lot of information is lost just because it is a singular object that may not seem important at the time or even useful in the foreseeable future. A hard drive with a persons life? Yea, I think that will be given a hard look.

(Reminder: Even after you have shuffled off your mortal coil, encryption programs can be your friends. Some things are best NOT known to posterity. )