IIRC Graeber wrote quite a bit about how a kind of fuzzily-accounted, low-level, shifting, mutual debt can be a big part of close human relationships (relatives

IIRC Graeber wrote quite a bit about how a kind of fuzzily-accounted, low-level, shifting, mutual debt can be a big part of close human relationships (relatives, friends) in his Debt: The First 5,000 Years. I recall in particular his using the example of a child "paying off" all perceived debt to a parent as a way of severing ties with them.