Some words of wisdom from Apollo Core forum regarding the MMU and Amiga:
-- "it slows the computer down"
-- "98% or more of classic Amiga software development was done on a 68K processor which didn't have an MMU."
-- "Having an MMU to debug and trap illegal instructions was a nice feature that came along later and only served to encourage poor programming habits by assembly programmers."
-- "Some creative developers just wrote some tools to take advantage of the MMU for debugging later in the Amiga's life cycle since one had been integrated into the 68030 and above."