While lust tends to be used primarily to describe the desperate hunger two people can have for one another, it is possible to have a lust for power or money as well. Lust is generally considered a bad emotion, but it doesn't have to be in every case. Although, in saying that, lust implies a kind of tunnel vision, and that can never be a good thing.
I've been thinking about lust a lot in the past couple of weeks. I've just started a new novel (one chapter done so far) and lust plays an important role in it. It's about a boy experiencing lust, perhaps not for the first time, but it's the first time he acts on it. And the consequences for himself and his family are devastating. Finding this angle to the story has been incredible. This is a book I've written twice before and never managed to make it work. I think I've finally found the right POV to tell it from, and the second thread to the story that will make it that much more heartbreaking and honest.
Lust is the key. It's messy and complicated and physical as well as being a driving force for many people, especially teenaged boys.
Does lust rear its head in your work? And does it turn out well for anyone involved?