Why does one write in a blog?

Surely the reason I write in this blog is because its a time for personal reflection.  I let my innermost thoughts come out, even though I would never speak about these things I write about.  Ive always wanted to make a journal, but I could never keep it up.  I also hope to one day become a writer and I figure this is a great start.  

Some people might think these thoughts are pretentious and fake, but they are 100 percent genuine.  I have nobody to impress but myself.