It seems ridiculous but without search information is lost into a disorganized pile. A little like making notes of items important to you which you then keep in a draw, the tactic loses its meaning entirely the moment the draw gets full of bits of paper and you no longer remember what you wrote down, this day, last year and stored there.
Organizing things in filings, as you go along is no solution either. As information grows its meaning also changes. Like pieces to a puzzle that are constantly being added to the edges, the picture gets bigger which means that the context and importance of the things in the center also changes.
What we need then is what we have at the moment: self-organizing information that exists in a highly structured form in an index that is constantly being enriched and re-evaluated so that results can be surfaced in a context-sensitive way.