I always shoot in RAW. It enables me to get exactly what I want from processing. When your camera makes a JPEG file, it makes all the decisions for you. You can pull much better highlights and shadows from RAW files, as well as get the exact white balance, sharpening, and exposure that you want for your photograph.
RAW files do take much more memory space, as well as take time to process. Having an efficient workflow helps speed things up. 🙂 I have a couple presets setup in my editor for photographs that I don’t care too much about (snapshots just for memories).