Few IT pros enjoy documenting their projects or code, but that doesn't mean it's not important. As Business Insider points out, the ability and willingness to write things down is one of the hallmarks of a successful manager.
As well as making life easier for colleagues, written documents represent a commitment that can't be easily wriggled out of. As Ben Horowitz explains:
Written communication to engineering is superior [to verbal communication] because it is more consistent across an entire product team, it is more lasting, it raises accountability.
Hit the post for more examples.
You Need This One Dull Skill To Become A Successful Manager [Business Insider]