Your job is to know who is creating value to the company. If the company comes to you and says "Tough times. Need to axe one person. Who is it?" are you going to ask your team?

Your job is to know how the team functions together. What are the skills of your team, who is better at what, who gets on with who, etc. You going to ask them each to write that down too?

I get the value of having them also do it for themselves, but if they write down total bullshit are you going to spot it? Seen that happen. Or if they miss things that you thought were valuable and they didn't? Are you planning on just remembering it six months later?

>I am a lazy manager

You will do well in corporate America or higher education, apparently.