On a slightly more serious note: I really wonder what’s going on in your mind when you press that button and cross anyway. Is it just because “I don’t care”, or is there more to it? If so: what?
EDIT: In case it’s because you don’t care: why do you press the button then?
Having been guilty of that at least once - you press the button and then realise there is sufficient gap in the traffic that you didn’t need the assistance of the lights to cross safely. You cross with each step layering the burden of guilt until you escape line-of-sight of the crossing. Then you can continue in blissful ignorance of the two drivers that just lost 20 seconds of their day and 5p in petrol.
And in guessing the Kyoto Protocol had minimal affect as most countries continued on with the attitude ‘so anyway, growth.’