This is a good rule of thumb (IMHO)....
Well-hid micros in the woods cut down on the hiking/exploring time, and increase the search time, with a low "rate of return". (Micros are fine, but you can't put much in them..)
The enjoyment of geocaching comes from the journey, the search is the 'work' part (so to speak), and the cache contents the 'reward' for the find.
While it shouldn't be too easy to find a cache, it should be reasonable (and properly reflected in the rating).
OK........flame away.