I've waited behind people who'd decided to wait for people who weren't even in their car yet, and someone who even decided to wait for a parked driver who had to put a wheelchair away, which took several minutes ... lots of horn beeping and shouting went on, naturally
Is it arrogant to make everyone wait so you can have a space?
Or fine, as other spaces further along will probably get freed up in the meantime? Worth mentioning: perhaps half the people waiting behind don't even want to park, they're leaving (it's a one-way carpark)
I thought this could be the kind of question that'd be interesting to discuss, really I can see it both ways ...