Full disclosure: I am a "ghostwriter" / editor / consultant. But I'm answering this as an avid reader who's always thrilled to find a new book/author in my favorite genres of apocalyptic fiction and international thrillers.

Here's what I've discovered via Kindle Publishing: There are a ton of people out there with incredible stories that get buried under horrible writing. I've set aside books that promised to be really interesting because the writing was so bad I couldn't make it through the first chapter. From continually switching tenses to failing to keep track of which character is which, there are some best-sellers out there dying a slow death because the writing stinks.

Why do I not just write books myself if it's so easy? Because I don't have the ideas. And I very much respect those who do. So if you have a great idea, don't let bad writing hold you back. Hire somebody to jump in and make sure what you have to say is clear, easy, and enjoyable to read.