Something that occurred to me not too long ago:

Once you start thinking of furniture as a type of computer hardware, it becomes much easier to talk yourself into buying a decent desk chair.

In some sense it is completely absurd how many computer people are willing to pay several hundred dollars for a good monitor (LCD or CRT), but will balk at spending even a hundred dollars for a comfortable chair. (In another sense, it is very human; we're not exactly entirely rational creatures.)