Did you ever suffered from acute necessity of telling something? Telling it to the whole world? As Karinthy would say
Nem mondhatom el senkinek,
Elmondom hát mindenkinek.
or in a free translation
I can't tell it to anyone,
So I tell it to everyone.
I think this idea grasps the essence, why I am doing this. I don't feel like talking about the kind of topics which I plan to write about. People would probably be bored, maybe even annoyed. I want to ommit that. Hence the solution; create the illusion of talking to someone by creating a blog.