To me, it seems objectively easier to pull into a parking space forward and then back out of the space when you are ready to leave. You don’t have to line up with the lines while driving backwards, and it’s easier to keep from hitting other cars as well. So why back in? To me, the only advantage I can think of is that you can get out quicker, technically.
Edit: I do not need driving instruction, just wondered why. The reasoning.
My grandfather had two habits drilled into him in the Army: never put your hands in your pockets so they’re always ready for action, and always park your vehicle so it’s ready to go.
This means he always backed in, and always parked as close to the exit as possible. And he did post-drive checks to ensure fluids, lights, brakes etc. were as they should be and the vehicle was ready for immediate use.
And he wasn’t even a getaway driver after the war.
That you knew about