Why do I need a blog?

I created this blog nearly ten years ago to have a play with blogging but I've never used it in anger, until now, being content with Twitter. However I have found, from time to time, that I want to share something or expand on a thought and the character limitation of Twitter, which in my opinion is one of its defining strengths, frustrates that desire. Hence I have dusted off my blog, given it a makeover and will use it from time to time when I have too many words to tweet.