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.
I don’t like starting my drive on a low-note of backing up out from a parking spot, anxious I will accidentally scrape a vehicle or bonk the curb or whatever may it be. Ending the drive by backing into the parking space means next time I leave I’ll start by driving forward to pull out.