Unless they’re sick or have found a better, higher-paying gig somewhere else, people almost never resign from cushy prestigious jobs. When somebody leaves a cool job it’s because they’ve been shown the door. So when you write a news story about some highly-placed person resigning, you have to try and convey what really happened. Who did the pushing and for what reason? Generic so-and-so is resigning stories along with generic “I’ve had a great run and am looking forward to the next challenge” statements are awfully damn annoying.