UPDATED 07/11:
As a photographer I prefer the RAW file format. I find I can get more flexibility in post production, more dynamic range and ultimately a better image quality with less hassle. Having said that, there are plenty of great JPEG photographers.
What’s It All About:
This article is not so much about the which format is better. We’ll save that for another day. The situation in question is editing images in speedy workflow programs such as Lightroom. Lightroom has revolutionized photo workflow because it’s fast and batches are a snap using Develop Presets.
Presets allow you to add effects and settings to images with a single click, or even apply them to countless of images. This is priceless when it comes to a photographers creative workflow. Also this type of editing is non destructive to the photo, meaning that you can make edits, and reset them to original at any time.