The other day when we were discussing following authors into different genres, Jennifer K. made an interesting comment about the appeal of series', and how they're compelling because you get to know more about the characters book by book. I have the same feeling about series books - it's why I love the JD Robb novels so much.
But at the same time, I've heard a lot of people worrying about the lack of completely stand-alone books. I must admit, there does seem a shortage of them - in the paranormal arena particularly. As an author, I think part of that is because most paranormals require intricate world-building, which means you can't explore everything in one go. Therefore the series. Personally speaking, I am loving writing a series because I get to develop both my world and my characters, as the series continues.
However, I also love stand-alone books because of the feelings of closure, of a definite HEA. (Though I do occasionally feel compelled to imagine more of a future for them than is shown in the book.)
So, how about you? Do you want more stand-alone books, or do you love interconnected books? What's the appeal (of either/both)?