That's right, you get to decide - is this photography thing you do a "business" or a "hobby." It can be either, and that's okay - but it can't be both. The problem often is, that photographers think it's a business, but really act like it's a hobby. For many of us, it starts out as a hobby, but it grows to a point where suddenly you've decided it's a business. But what's the difference? What would you do differently if it's a business and not just a hobby?
The big idea: If it's a business, it has to make money.
"But I'm an artist! I can't possibly just be doing this for the money!"
That's okay - then just keep pursuing your photography hobby. No problem with that.
If on the other hand, you've decided that this photography thing you do IS a business - well, then it's time we act like it.