Writing For Yourself?

So why do people write? A lot of people say they write for themselves. But really? Why? Because they enjoy it? I suppose that could be the case, but speaking for myself, I'm not so sure I write for myself. I actually want people to read what I write. Otherwise, why write?

I suppose one could say one writes because it's fun. But so are a lot of things. So why do people write? Besides the fun, it's a form of being an entertainer. Stories or books, should be entertaining. Thrillers should thrill people, mysteries and romance should be such that one is entertained by them.

I guess it's not so different than the other things I've done, like artwork, music, and even athletic endeavors. They all entertain people. So, yeah, writers are entertainers. Just behind the scene type of entertainers. That's all.