What is the point of a blog? Occasionally I stumble upon one just too find its some random person rambling about their life and their problems. Yet many people I know still want too start a blog of their own.

I've found 1 or maybe 2 blogs that share useful information and/or are intresting too read. Though people actually SPEND 1-10 dollars a month for one, Buy a damn Journal/Diary. Its no different, But it's sure as hell is cheaper (And perhaps those servers can be used for something useful, such as gaming) , So I ask you whats the point?