I know one of our local long-term professional photographers gave a lot of his stuff to the local museum. In addition to portraits, he also shot a lot of street photography and different events and they were happy to have them. I know from having helped go through my wife's father's photographic legacy, I myself will try to be more diligent in labelling stuff. He was an avid 35mm colour slide photographer so there were boxes and boxes of slides that had to be quickly sorted through in order to determine what the family wanted to keep. A lot of it was work related and had little meaning as we didn't know what he was trying to show in the slides or its importance.
What about an old fart like myself who is still accumulating? May be looking at a Mamiya RB67 Pro S with two lenses and 3 backs for a super price tomorrow. I don't know if I can resist.
Oh well may we all have long active lives to practice our passion and enjoy our accumulations.