IME: because the people who are ok with abandoning things are gone, and people who are not ok with abandoning things are stuck there due to some kind of fucked-

IME: because the people who are ok with abandoning things are gone, and people who are not ok with abandoning things are stuck there due to some kind of fucked-upness (in the grandparent, lack of quorum) that makes it impossible to 'properly' depart until they just can't do it any more. I chaired an organization for four years (in a planned term of two years) and had nobody interested in being my successor. Finally I said "I can't be involved in this any more" and basically disappeared on them.