Maybe it's a petrol thing, but I've been perfectly happy with my DSG Passat. On occasion in D, it might seem a little slow to change down to accelerate (I don't mean full throttle kick down), but it's still probably quicker than changing in a manual. By that I mean from the time your brain says 'go' the first the car knows about it is when the throttle is pressed, whereas in a manual, your brain says 'go' you have to select the gear before pressing the throttle. Essentially the same process, just in a different order.
Having read this thread, I thought I'd give manual mode and the paddles a go this morning, but the first T junction I came out of, when I needed to change to second, the steering wheel was completely the wrong way round, so by the time I could reach the + paddle, I was doing about 4,000rpm. I carried on for a bit longer, but soon go fed up and put it back into D. The only times I've really use S, is when towing, but that's not really a GTI sort of thing to do.