Clutches are only manufacturered to be pressed and depressed, not pressed and held down. Your clutch will move smoother for longer if you don't stand on it all the time. I've always taken it out of gear and cruised up to a light in neutral and sat there with just the brake. It's much easier on your engine.
I do this too. Some ppl downshift when they're coming to a stop because "it saves the brakes". Well...I have 3 reasons why I'd rather just cruise with the brake than downshift.
1. You CANNOT completely stop using the clutch alone, therefore you still need to use the brake.
2. Brakes are easier and cheaper to replace than a whole clutch.
3. From experience, I can normally feel when the brakes need replacing while if I notice something strange with the clutch its almost already too late.
It's all about SMOOTHNESS!
I still downshift when I need to, but never to stop. It's the brakes I'd rather "compromise" over my engine/clutch.