"Cyclists utter obsession with getting ahead of traffic at junctions does them no favours. It pisses off every other motorist and puts them in dangerous situations."
The whole point of commuting by bike is to get there faster. A bonus is it costs less, keeps you fit, causes less obstruction overall to motor vehicles and kills fewer people.
If I have to stay in line with cars (10x my width) then I might as well use my car. But if we all did this then the congestion would be much worse and you would be stuck fuming in your car for even longer. Who would you take out your frustration on then?
You have my sympathy - driving cars in cities today is bound to make you feel angry.