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.
This is exacerbated the longer your vehicle is. It is impossible to turn wide enough with my pickup truck to park forward because the front end swings too much. The more efficient car I take on normal commuting doesn’t have this issue.