"Reality" shows, Twitter, FB posts, and Kanye West rants have taught us every thought that pops into our minds should be verbalized in public -- to as many people as possible.
What happened to keeping some things to ourselves? Sure, I'm writing a blog entry that expresses my opinion. An opinion that some things should be kept in our own minds. That's what an internal editor is for: to stop the stupid stuff from coming out.
Same with writing. You can write all the things that pop in your head, but it doesn't go directly to the public. I don't hit the POST or SEND button until I take a breath and reread the message. Is it something to be shared? Can it benefit the reader?
Back in the 1980s, e-mail was mainframe-based, and once I pushed the keyboard's F10 button, the message was gone. I learned early to consider exactly what was written, what was shared, what my name was attached to.
Maybe that's why writing a manuscript takes me so long -- well, that and having to make a living writing other things. 
A first, I thought I would love the freedom of blasting off a thought on movies, music, politics, books, or gee, even television. But then I read what others posted and realized my opinion is really only interesting to me. 
So, like writing a book, life can use a little mystery, a bit of suspense, or some subtlety.
Wait, weren't the 50 Shades of Grey books big sellers -- those must have been coy and demure to have captured so many people's imagination.