Let me know if I'm wrong, but 25K of reputation unlocks all privileges, and is the maximum reputation level that can be accomplished.
I picked 40K as the cutoff for this question, as I acknowledge that users want to conserve these privileges.
I'm assuming that these users won't be returning to the site. Thus most of their "wealthy" reputation will be useless.
I'm thinking of users like Arturo Magidin who has 270,960 reputation. He was "[l]ast seen 2 hours ago". His profile emblazons that
I remain "gone for the foreseeable future" from math.SE, tex.SE, and meta.SE. Though I may very occasionally post a comment or an answer, these do not signify a desire to re-start my heavy prior participation.
Please do not send me private e-mail to call my attention to comments, questions, or other matters related to those sites. Thank you. Also, as I no longer participate in those sites, I do not wish to be sent, by private e-mail, questions that you can just as well ask on those sites. I would have thought it was obvious, but apparently I need to say so explicitly.
Thus before quitting, ought such users not donate some of their rep, or at least offer to do this?
I don't need to panegyrize the advantages of donating rep, rather than hoarding this rep or wealth. In a few words, donating rep can capacitate impecunious users to contribute, like by awarding bounties on underrated questions, and gaining privileges.