Self-indugence.

I was wondering why I have started writing this 'blog'. I have no conclusion as of yet, I'm just hoping to find out as I write.

First off, writing is something that I very much enjoy to do. I'm generally good at expressing myself, whether its through talking to people or writing, but I find that I'm more free to be completely open when I write. It’s like being on ecstasy your inhibitions are loosened and the truth is more likely to flow out whether you mean it to or not. Which I think is a good thing, I occasionally play dark and mysterious but I think I'd live a happier life if I was always straight with people, and I can be when wrighting - I don't feel the need to stay within the norms of social conduct, to restrict myself to avoid embarrassment, as I believe I do in most everyday conversations.
But this makes me think to myself; am I doing this for selfish reasons or am I trying to enrich and enlighten the lives of other Blogspot users... It definitely is not the later. This brings me to thinking is everything I write to indulge myself? Is there any non-selfish form in which to write my mind? I've written reviews and articles and the like which have been solely for the reader but I don't think that counts, I'm still writing for me as well, to accomplish something.
The reason I am thinking these thoughts, is because I read an article today by someone who is the definition of self-obsessed, he tells the story of his struggle to 'overcome' body dysmorphic disorder, an 'illness' in which you are completely obsessed by your appearance. The article was for a website called Health and Spirituality (eeeew). The irony of the piece was how he was writing about overcoming his self-obsession but in an entirely self-indulgent way.
Everything I have so far written (on here) is either to inform, entertain or both. But who is my target audience? Who am I trying to inform and entertain? Me?