I am not alone

Well, in the question of why I blog

see this from an economist

To all those readers of this blog who have requested shorter, snappier, less technical and abstruse postings, the following.  I write this blog for me, not for my readers.  Writing things down is the only way for me to communicate effectively with myself about complex issues.  By doing this writing in the form of a blog, I gain the option of taking on board the comments and criticism of those who read my scribblings and feel compelled to respond to it.  I gain this benefit at the cost of having to plough through a lot of stuff that makes little or no sense, in order to uncover the few pearls hidden among the swine.  There are minor vanity/ego rents to having people read what I write, and my consulting income may receive an indeterminate boost from these activities. But all that is secondary to my need to write.  I don’t know something unless I have written it down.

Full piece here (link via economist free exchange)