People avoid talking about work on Fridays because for the most part it boring to listen to. That's not to say interesting things don't happen at work but for someone that's not directly involved making or missing say a major project deadline is irrelevant to them. And the specific's of designing a new CPU / Space Probe / Power Supply rarely interests someone in say Marketing.
Sure after a few years you may pick up a few generally interesting story's, but there rare and people only want to listen to those story's once.
That's true. But what this means is that I actively try to hold back from talking about work to avoid being a bore... but I still want to! The people I know that actively avoid it, often avoid because they just don't care for their job.
Sure after a few years you may pick up a few generally interesting story's, but there rare and people only want to listen to those story's once.