Why I blog?

I think like most bloggers, we start blogging for one reason then evolve into a different *type* of blogger, weather we mean to or not. Our interests change over time, children may be born, major life events may occur that change us, we do change.
I've always wondered about "why I blog". Is it to be "part" of something? Are bloggers anti-social people, who find it easy to share with strangers, some aspects of their real lives, that they can't with "real" people?
How do you know, how much to share?
I always think when I make a post,  there may be 1 person who might read this, and take something from what I have posted. I am not out to inspire anyone, that's for sure. I am a real person, and in no way have an exciting life.
I do think strength can be drawn by reading about others lives.
I am happy to have a small connection of blogger "friends", who I know I can share some of my life with.
Peace to you all.