I've made mention on the Mac Power Users that I have an on-again off-again relationship with a personal journal. I explained that I write it only for myself and really have no intention of ever sharing it with anyone. That comment resulted in several emails to me asking why on earth I'd spend my time writing things that nobody else will read.
In the future I will answer such email with a link to this post from Ernie Svenson
"There is an elegant discipline involved in capturing your daily perspectives on life.
When you write your thoughts every day you’ll begin to see new things."