It sucks away all my money and free time. Makes me frustrated by suddenly not doing what I want it to anymore and refusing to say why. Sometimes it just defies all logic - you know it should work, but it just doesn't!
Hmm, sounds kind of familiar...
But seriously, it's an obsession. When it works, it works really well.
I love the fact that I can take a motherboard which was built in 1990, add a few (albeit very expensive) components, some kickass software which installs from a double density floppy disk (sometimes two or three!) and all of a sudden I can surf the internet, view my desktop in 24-bit, write CDs (better than most PC software can), network to my PC, attach USB devices, modify photos, produce documents, use maths utilites, produce spreadsheets, etc, etc, etc. All that and a gazillion classic games to play too!
If only I could convince my employers to install an Amiga network instead of the current Windows one...