I am the proud owner of a good collection of vintage Macs (see signature) but I am reconsidering this hobby as compared to, say, reflex cameras or in general mechanic things. If you don't use you Mac collection for some time, and with more than 30 of them it is not easy to even power them on, you end up with Macs not booting or showing weird behavior. Today I fired up the Color Classic and the SE/30 after probably more than one year. The CC has a well documented symptom: the power key produces one or more audible clicks, and the front green power-on LED blinks in sympathy for as long as I hold the key down, while the SE/30 is showing again the sismasi mac thing (last year I replaced a couple of capacitors). PowerBooks with the NiCd batteries and the internal backup cells are even more prone to misbehave. The Wallstreet that I left in the drawer for some months with two fully charged and good batteries no longer boots off the batteries and one is dead. I could keep writing a book! On the other hand yesterday I picked up the 1980 Pentax LX, that had been seating on the shelf for the last 4-5 years, and managed to take a whole 36 exposures film. I know, everything ages, also mechanic cameras (http://homepage.mac.com/bengi/files/LX.html).
So my speculation is: is it still sensible to keep collecting and preserving electronic devices?