Maybe.

I was working at a bike shop years ago. A man in his 20s comes in and says "I want to buy a bike". After talking to him for a minute he confessed "I was sitting in traffic yesterday and had just watched the same traffic light go green-red-green-red three times. Then some dude comes flying by on a bike, runs the light, and disappears over the horizon while I watched the light go red for the forth time. That's when I decided I want a bike."

Also, do you think motorists would be happier if every cyclist (in a big city) cued up at the light with all the cars and waited their turns, then as the light goes green all of the cars behind them had to wait for cyclists to get up to speed? Do you REALLY think motorists would be happier if we all obeyed the law? Really?

Motorists just want us the hell out of their way.