Glory
While you don't get the fame, your words do find their way to print, and you can tell everyone you know that you're published. Your name won't be on the front of the book or magazine, however, so they'll have to be good enough friends to take you at your word.
However, no matter how successful the pieces you edit or how many (or few) people know who you are, there's glory in adding to our world's expansive library of the written word. If you've taken pride in your work, then you can rest easy knowing that it is mistake-free, and that it will educate or entertain others.
Long after you're gone, people may be pulling down books from dusty bookshelves and laying their eyes upon the words that you put there. Hopefully for you and everyone else in your field, those bookshelves won't be too too dusty.