A friend of mine recently worked for Harman International. With his employee discount, he put together a honkin' Levinson/Revel system (well over $10K retail). Then he got downsized. So, he sold all the gear and replaced it with a stereo Tivoli table radio and a Walkman (about $300 retail).
He still had surprisingly good-sounding music, and a fat wad of cash with which to pursue a new career in antique clock repair.
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Me, I've only just now hit The Wall. I have as much, and as high quality, equipment as my budget can afford and my room can accomodate. Unless I win the lottery and/or move to a bigger house, there's no sane investment I can make in my system. I'm trying really hard to relax and just listen to the music. And there is a Zen to it, the Zen of not trying, which I only seem to acheive at the worst possible moment, like this morning, when I absolutely had to get out of The Chair and go to work...