Plus, if your startup fails, you can wheel your Aeron chair out of the door as a severance package while Michael Arrington flings mendacious personal attacks at you on TechCrunch with gleeful schadenfreude.
Supposedly Aeron chairs don't depreciate much over time. You could sell the chairs and even get most of your money back! I recall reading somewhere that the Aeron chairs companies bought during the big bubble were their most valuable assets when they went under.
They're like cars -- they depreciate a great deal as soon as you drive them off the lot, but then depreciation slows considerably. If you buy a used one and keep it in good condition, it probably won't depreciate hardly at all.