I've been down sick for a week now. I won't bore you with details--they aren't particularly pleasant--but once I quit sleeping most of the day I realized I had time to read. I've been slogging through Jonathan Strange & Mr. Norrell. Now don't misunderstand. It's a good book, a very good book. But it's long. Over 800 pages long. And the chapters are long. So when you pick it up, you've committed yourself to a bit of time. It's a book that's hard to put down once you start, but hard to pick up in the first place.
The book is a best-seller so I don't think the length was a huge turnoff. However, how many people who bought it have read it? Would it matter to you? I mean, she's got the money. So what if no one really got past the first hundred pages? Some authors would be okay with that.
While, yes, I do want to be able to make a buck from my writing, I also want my words to mean something to others. Maybe over-reaching in the long run, but what can I say? I'm a dreamer.
So what motivates you to keep going? Is it the bucks? You can be honest here. No judging. Or do you want to make an impression with your words? Or both?