Ever wondered why one start creating their own blog?

Wow. Alot to absorb for nursing courses and interviews.  I hope everyone's weekend was a good one.  Ever wondered what is creating a blog is about?  To me, its like writing a diary.  You find articles in the newspaper interesting or even when you meet up with friends or relatives that share with you some stuff that you might find interesting and etc.....  One thing I like about it is one day I can look back and well reminisce the past.......