I have the pleasure of London traffic (jams) most days, and it drives me nuts when drivers sit with their foot on the brake. Being blinded by bright red lights at eye level, a few feet in front of your face is nothing short of ignorance.
If I stop behind a car at lights etc and they have the brake lights on then I switch my head lights on to main beam, sometimes they get the message and take the trouble to use the handbrake..
I have driven an automatic, great cars, I would imagine that most auto drivers are not aware of the brake issue, so they are not setting out to irritate you, less annoying than tailgaiters...or tailgaiters with their 'automatic lighting sensors' dazzling you at close range.
I've been driving automatics since I was 17 and i passed my test in one in 1974 and I always sit at traffic lights with my right foot on the brake, I never use the left foot as it is not necesary. I wouldn;t put the handbrake on either, infact I don't use the handbrake when I park up, except when it's a hill park, I just put the gear into Park and the handbrake isn't needed, saves the cable life.
There are several level-crossings near where I live, when the barriers come down, I not only put it into 'Park', I switch off the engine as well, re-starting as the train passes, over a year I must save maybe a couple of hours worth of petrol (and pollution) at idling speed, - whose a clever boy then? :-)
My car has an 'eco stop/start' function, so if I brake and stop, the engine automatically cuts out, then when I lift my foot from the brake it starts up again. For some reason the daughter does not trust this so when she borrows my car she switches this function off.............