Enjoy idling at a red light with no cross traffic or pedestrians in sight?

I despise sitting at a red light with no cross traffic or pedestrians in view. It wastes time and fuel, and impacts the global warming problem. It's bad enough most of us propel just ourselves all alone in our car down the road sucking down fuel in our 100+ horsepower engines, but sitting still, wasting valuable resources? We could probably stop our dependency on oil just by finding a way to stop idling needlessly at red lights. How do you feel about sitting at a red light and watching a pedestrian walk across, then turn and walk halfway to the next intersection before the pedestrian crossing light changes? Or sitting with a dozen other cars, just sitting, one or two to a car, 100 pistons pounding away burning fuel and creating heat and accomplishing absolutely nothing, no cross traffic in sight, until the light ever-so-slowly changes to amber... then green...?