Why do I write a blog?

You write your blog and continue doing it for three simple reasons: you want to do it, you can do it and you are allowed to do it.

1. You are allowed to do it: there is no "you shall not write" commandment prohibiting it.
2. You can do it: means and technic are there.
3. You want to do it: you feel that writing the blog will give you some satisfaction.

And then, there are at least two causes for your motivation:
1. People out there may read your words so you fulfill one paramount need for mankind: communication.
2. You may re-read what you wrote and may like it so you get proud of your creation.