You'll waste everyone's time.
Copywriting legend Bob Bly says:
To maintain the recommended frequency of posts, bloggers write blog articles even if they have nothing to say.
And the result is drivel. As Willy Nelson says, “You can’t make a record if you ain’t got nothing to say.”
What happens when I have no news, information, or thoughts to impart?
Should I blog for the sake of keeping up with blogging?
Or should I be silent until a worthy idea occurs?
On the one hand, writing stuff just for the sake of posting something every day is sort of pointless.
If you don't have anything to say that people want to hear about, they might read once, but they won't come back.
On the other hand, you probably have a lot more to say than you think.
People don't want to start daily blogs because they feel they wouldn't have something new to say every day... but the reason they don't is because they don't have to.
When you commit yourself to writing every day, you will go out of your own way to find things to talk about. You'll notice things you never did before. At the store, in the coffee shop, just sitting on your ass -- there's always something to write about that will be relevant to your audience.
But you'll never know what that is until you start writing.