It’s astonishing how many times I’ve seen drivers stop near the entrance of a parking lot or structure and wait for someone else to load their car, get in the car, start the car, fumble around for sunglasses, make a phone call, put the car in reverse, check their messages, and then back out…even though there are 1306 open parking spaces on the upper levels, and a line of six cars behind them waiting just to get inside.
If the other driver is actually ready to back out, then yeah, it’s nice to pause and let them out. But if they’re not even inside the car, or if they haven’t even started it? The only thing you’re accomplishing by waiting for this space is annoying the people behind you.
Though I suppose for some people, that’s reason enough.