I applaud the fact that drivers sometimes stop for me when they don't have to, really I do. Notably when the traffic is so busy that I would never get across otherwise. Or when I am obviously hanging off the edge of the kerb in a tearing hurry.
BUT... when I am stood stock still at a junction, a safe distance from the kerb, and there are few or no cars behind yours, and you are slowing down but you'd have to anyway for the junction, and you might be saying something or waving your arms at me but you're behind a window that is catching the rain or the sun or whatever, and your intentions are therefore very very hard to read... I would really rather you just carried on driving and let me cross the road in peace once you have gone by. Sorry.