Earlier quoted context omitted.
They would rather back into a parking spot surrounded by stationary obstacles than back into a parking lot or road which may contain pedestrians or other drivers. I'm not saying _I_ back into spaces. I generally drive into spots and reverse out of them. However, I admit that what I do is a tradeoff where I take on risk in order to have a mechanically easier time entering and exiting the space.
This makes no sense. In either case the car traverses the same space once forwards and once backwards.
And then some parking spots require parallel parking which is best done via backing up anyway.