Your life's work is just practice for oblivion.

Your life's work is just practice for oblivion is not a comforting metaphor. It is a blunt inventory of your effort. Every late night, every tedious spreadsheet, every project you hugged like a winning lottery ticket is merely rehearsal for the moment nobody remembers you. You are not building a legacy. You are arranging deckchairs on a sinking ship and calling it craftsmanship. Oblivion does not care about your qualifications, your overtime, or the little plaque you bought yourself for being marginally less useless than the person at the next desk. It will swallow your finest achievement with the same enthusiasm it reserves for a forgotten sock. The sting is that you already suspect this. You keep working because stopping would force you to admit your grand contribution is a rounding error in the universe's accounts. The quote lands best when you are proudly explaining your five year plan to someone whose eyes have already glazed over. They are not impressed. They are watching you rehearse for nothing, and being polite about it.