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.
It’s safer to back into a spot than back out of it and personally I find it easier especially if it’s a narrow spot. Also means that my car is then straight in the middle of the it.
In all honesty it’s something I do mostly because it’s what I’ve always done. I also like to paraller park into tight spots because I like the challenge.