Or you could remember the rules of proper following distance to ensure that you don't hit the car in front of you in case of a sudden stop. Two+ car lengths is actually considered the correct amount.
Not necessairl applicable when moving at slow speeds when coming off a stopped light and you're not moving at any rate of speed where the two car lengths are needed to have plenty of breaking distance. Get off the line and build that distance while going down the road. You don't sit there and wait for that gap to open up as you sit at a green fucking light.
There's people behind you who want to get to their destination maybe even need to get to their destination.
The light is on a sensor, if you don't move through it quickly enough it'll assume no one needs to get through and turn to yellow (and then back to red) so it can let waiting traffic get through.
A two-car length following distance isn't needed when you're going 10 miles an hour when speeding up from a red-light, it's needed on the road when you're moving at 45 miles an hour.
Lite turns green, your foot goes on the gas not sitting there day dreaming for several seconds while your brain processes the concept.