cjf beat me to the punch. These days, any script kiddie can fetch a suite of tools and start compromosing systems without having even a remote clue of what they're doing.
Also remember that a cracker looking to add drones to his swarm for a staged attack (DDoS, putting an MTA on your box to use you as a spam relay, etc) does not care about the individual systems at all.
Times have changed. Nowadays, your mere existence makes you an appealing target. (See Honeynet projects et al.)
Makeshifts last the longest.