When I'm on vacation, I try to be more like a normal person and less like a photographer. One of the ways I do that is to put a compact camera in my pocket and leave everything else behind. This usually means that I'm shooting Jpeg.
It's funny, now that I've been shooting Raw for a couple years, I really notice a difference when I process Jpegs in Aperture. I'm so used to being able to recover vast amounts of image data in the highlights and shadows. I have so much information to work with regardless of the slider I'm using.
After processing a day's worth of Jpegs, I feel like I'm image editing with one hand tied behind my back. I move a slider expecting a certain result, and the image just doesn't respond "right." It's a good reminder of just how powerful Raw photography is.
Does this mean I'm going to start lugging all my photo gear around? Nope. I'm still on vacation. I'll shoot Raw when it's convenient. But the rest of the time, I'm still going to be a tourist.
Photo of Dragon's Teeth formation near Kapalua, Maui, by Derrick Story. Captured with a Canon SD700 IS in Program mode.