Actually, I blog for a lot of reasons.
The most important, of course, is to share weird, bizarre, everyday, boring, your-word-here things with you.
Another is because it clears random thoughts out of my head early in the morning and helps me make better connections throughout the day. By better connections, I mean that it enables me to be better at seeing outside the box.
Whether I'm writing or painting a wall, my natural tendency is to focus so intently I can't see anything else. The good thing about having this trait is that I can work through barking dogs and other distractions. The bad thing is I want to see everything one way.
As a happy side effect of blogging, I found my teeny brain is more open to different connections even when I'm focused. I like that. It definitely makes my life easier.