re: Sure, why not?
No real reason (my personal taste doesn't count)
How many blogs have you seen...
Perhaps a dozen, total -- all of which belong to writer friends, who talk about what they're writing, or reading, or both.
I can certainly envison that a chance to blog in the familiar confines of the Zone would be welcome to some here. But not me. You're absolutely correct about the social environment. I don't need a computer to facilitate talking to myself.