I'd like an SLR, but if I had one, I'd rarely use it as I generally don't want to carry a big bulky camera bag everywhere with me. I currently use a Canon S1IS but even that's a lot larger than I'd like.
My next camera is likely to be an itty bitty thing I can keep in my pocket all the time.
After that I might buy an SLR as well, but the itty bitty camera will be coming first, simply because I'm a lot more likely to be taking photos on it. Plus, I'm usually taking photos of scenery so lighting is usually not a problem and there's no need for a short focal depth, so any old half-decent camera can usually do the job fine (ish).