One of the contributing factors that caused me to "Defect" to the PC world was the fact that, for the most part, Amiga hardware was always expensive; even when Commodore went under! For the cost of adding a used hard drive to my Amiga 500, I could have bought an entire used PC system with a bigger hard drive!
Things are actually more reasonable these days, for the most part, so I decided to get back into the computer I love. For instance, getting a SCSI controller that handles regular SIMM modules up to 8MB (and is loaded with 2MB) for the A2000 for $51 is actually reasonable. A mint barebones A2000 for $50 was also a decent price.
As for using these computers, there is another use besides playing games, MP3's, watching DVD's, and for productivity. It's a great system for hobbyists to tinker around with.