I think that sooner or later, 99% of bloggers will retire from blogging or at least their current blogs. There comes a time when anyone has said all they have to say and all that keeps them going is ego. If they can come to grips with the ego question, they’ll move on to something else.
That something else may be a different blog on a different subject matter and a fresh perspective. Or it may be to leave blogging altogether.
For some people, that will come with a dramatic declaration that "I’m outahere." For most, however, I think it will come about with less and less frequent until things simply peter out.
What do you think? How long will you keep blogging before you shut down your current blog or walk away altogether?