Why did the skill of writing disappear from Mycenenaean society?

The skill of writing disappeared from Mycenaean society primarily due to the collapse of the Mycenaean civilization around 1200 BCE, which was marked by widespread social upheaval, invasions, and the subsequent loss of centralized administrative structures. The Linear B script, used for record-keeping and administration, became redundant as these systems fell apart, leading to a decline in literacy. Additionally, the ensuing Dark Ages saw a shift in cultural practices, with oral traditions becoming more prevalent and the need for written records diminishing.