Why Blog?

I've been wondering why people have blogs. This may seem a silly question coming from someone who has a blog. Are blogs just a tool for people who want to be writers or like to hear themselves talk? Last night I watched Julie and Julia and it made me wonder how many people went out and created a blog after watching that show. Did they create it just so they could say they have a blog? So why do I have a blog? I've pondered this quite a bit. Heaven knows I'm not a regular blogger in any sense of the word. So why do I blog? I've decided that blogging is what I use to help myself talk though issues and problems I'm dealing with and thinking about. So, I guess, quite simply I'm problem solving using myself as a sounding board. After all, no one knows me better than myself!