PSFK had a link to a great (and greatly wordy) essay by design thinker and green design leader Bruce Sterling.
- Beautiful things
- Emotionally important things
- Tools, devices and appliances that efficiently perform a useful function
- Everything else (predicted to be the largest category and one that must leave your daily space)
You are not "losing things" by these acts of material hygiene. You are gaining time, health, light and space. Also, the basic quality of your daily life will certainly soar. Because the benefits of good design will accrue to you where they matter -- in the everyday.
Further, he maintains you should make those everyday tools the very best you can get, be they a bed, a chair, a computer, presumbly a chainsaw if you're a lumberjack. So it's not about "green-hairshirting" but quality and purpose.