Have you practiced your parallel parking today?
I have no real issue with parallel parkers backing up and will gladly wait for you until the traffic lane is clear, but that patience is limited and you need to make your parking effort count.
When you are such a pathetic and unskilled vehicle operator that your first attempt leaves your car at a 45 degree angle with your back wheel on the curb and over half a car length to the next parked car, you basically take a shit on orderly society if you make any sort of move to renter the traffic lane(s) while other vehicles are present.
PRO TIP! Look over your right shoulder and point the center of your car trunk at the car's left headlight behind you. Get it almost all the way there, and CUT IT! You'll park perfectly three out of four times. THE MORE YOU KNOW. Got any good advice, rants, or confessions to share with the world? Send it to the I, Anonymous Blog—where you get as many chances as you'd like to blow it.