Psychology says people who slowly become unpleasant to be around as they get older didn't develop new flaws - they lost the motivation to manage the old ones, and the management, it turns out, was doing considerably more work than anyone around them understood while it was still running - Silicon Canals

""As we age, it's harder to have a get-up-and-go attitude toward things." - Ann Graybiel, highlighting the diminishing energy to maintain pleasantness."

""People tend to become more reliable and agreeable with age, but their openness to novelty drops at the same time." - Peter Borkenau, emphasizing the trade-off in managing behavior."

As people age, they often become more difficult to be around, not because they develop new flaws, but because they stop managing existing ones. The energy required to maintain pleasantness decreases, leading to increased impatience and selfishness. Ann Graybiel notes that maintaining a positive attitude becomes harder with age. Peter Borkenau adds that while people may become more reliable and agreeable, their openness to novelty declines, which affects their ability to manage their behavior effectively.

Read at Silicon Canals