^^^^
Yep, like you do, I drive mostly in M and paddleshift. I will use S though on very busy fast flowing multi junction roundabouts. Milton Keynes (the world centre for roundabouts!) is a good example. I'll shift from M, quickly through D, to S on approach and then back through to M on acceleration away from the roundabout. I find S useful and also fun in those circumstances. Also, I'd otherwise never use it much.
When I first had the car I only used D and S, using S as a 'gear' for overtaking or during sequences of tight twisties. I didn't like the feel of the oem paddles and much prefer my TID extensions.
DSG rocks!