I agree with OP on this. When it comes to issues like this, you have to look at the aggregate impact on all the other drivers on the road. If you block a lane for the entire duration of a light cycle, you haven't just caused 5 minutes of delay, you've caused 5 x # of cars behind you worth of delay. Say 12 cars get stuck for an additional light cycle. That's an hour of time right there. Assuming the average person's time is worth about $20/hr, that was a $20 left turn you just inflicted on the world. Add up all the hundreds or thousands of times that this happens per day, times 365 days a year, and it's not inconceivable that people making douchey left turns are inflicting millions of dollars of lost productivity on their fellow citizens each year.