Are you a manager? Then you have to follow the norm- pick a bozo from your pool of subordinates, and treat them as your favorite. Because the corporate management arena work using the Blue Eye System, where you MUST have an incompetent blue-eyed boy or girl.
You need someone to remind you that you're still in charge
Having someone who nods to your every decision is a great way to do that. Because most of your staff is clever enough to think you're incapable of making any good decision.
You need someone to share your bullshits
Managers sometimes suffer inferiority complex, a state where they're short of distinguished accomplishments to bolster their self-esteem. So are you, so you need someone who nods in excitement to every bullshit you created (to make you feel good)- like the story back then when you were in high schools..
You need the false sense of competency
It's an open secret that you don't have to be smart or competent to be a boss. So you need something to feel like you're one of those competent stars. What is better than having such looser sticking around and praise you all the time?
You need to do less work
The blue eyed boy/girl will go to great lengths in securing this promising position (it can result to promotion, raise etc..), so they'll respond to your every request with 'Your Wish Is My Command'. They'll run all your personal errant. And even fetch you at the airport, which is handy during your midnight arrivals.
Unlike me, I don't have anyone particular as my favorite subordinate. Because I'm so competent, I don't need them. But hey, if there's someone who is more capable than me, they can replace me as the new CEO.
But of course after I struck a deal with them that will leave me a couple of billion dollar richer. Does Golden Handshakes ring a bell?