Indexing has an incredible allure for me. I have been marking up references on post-its and sticking them in the margins of the proofs; this morning I consolidated the individual entries into alphabetical stacks, then began typing in one letter at a time (Word will alphabetize once I type in entries, but I need to do it letter by letter so that I can keep track of which individual entries to consolidate - if you typed them all in higgledy-piggledy, you would end up with a good deal of subsequent reformatting still needed).
Probably nobody but myself and perhaps a copy editor or two will ever look closely through the index, but I like the way it presents an alternate route through the book, with each letter of the alphabet - in this case of this sort-of-memoir - representing a kind of self-portrait in miniature.
(This index isn't nearly as complicated as the last one I did! Fewer options here, too, for activist indexing, though in compensation there are more opportunities for mildly humorous entries.)