Novellas - love 'em or hate 'em?

Today I wanted to write a little about novellas. As a reader you either love them or hate them. They aren't quite a short story and they aren't quite full-length. They range from 15k-45k in length. They are typically to the point. You don't have tons of filler story. You get the story between the heroine and hero.

When I wrote Amber's Muse, it was a shorter novella at 15k. I just wrote their story. The reader met Amber and Jax at that moment, saw her ask him to be her sex guinea pig, and then got to read about how they fall in love. There was no background story (okay there was a little since she disliked him in the beginning). I didn't write about Amber's past or childhood and same with Jax. For some readers, they want that. That's why I think their is a love/hate relationship to novellas. 

I personally love them. I enjoy being able to sit down and read something in an afternoon. I have a busy schedule with taking care of kids and finding time to write.  And to be honest, many times as a reader in longer books I will become a skimmer. I like my books to keep the story going. And while it is nice to know a character in more depth sometimes I don't always find it necessary. If the characters keep it interesting and continue heating up the pages in their personalities, I don't feel as though I'm missing anything. I think you can learn a lot about them just from their thoughts and dialect.

Currently I am just a novella writer. I like knowing I don't have to get the book to a certain word count. I can let me characters have their story and do their thing. And if it ends at 20k, so be it. Hopefully I've filled those pages with heat and action that will leave me reader satisfied after they spent their afternoon or evening reading it.

So tell me. Do you love a novella or hate it?