I bought Scrivener so I could finish off an eBook that I was writing, edit it and then publish it on Kindle easily. After all, it was designed for that purpose.
Writing novels and eBooks in a very easy to manage using Scrivener. I can certainly testify that it is a great way to write a book, eBook or free report (like my 7 habits to speed up your blogging) but there is more to Scrivener than just writing books.
When I looked at the features, I realised I could use it for my Bible studies: