How many times have you seen people make a decision that was truely baffling? The answer to you was obvious - but they went the other way? The facts were clear, the path was laid out - they took a wrong turn?
Unfortunately, this happens all the time in Human Resources. People leave jobs that they should not have left. They take jobs that are not the right job for them. They develop a bad attitude when they shouldn't. They desire a promotion that they are not ready for. Management that does not take care of their best employees.