Having spent many, many years working on publication applications in Classic, I've lost more work than I can imagine because the system decided it didn't like something I'd done.
(Quark is the worst offender. I hereby banish you to hell! Even when Quark 6 is shipping, you will assuredly still crash my computer!)
If we free ourselves of Classic, things might just work, the way we Macintosh users have always said they would. Independence Day, here I come!
The Declaration of Independence from OS9