Similar annoyance - why do people park next to you in an empty car park? Why would they want to make it harder to get out of their car?
Had something like this at Meadowhall years ago, it was a quiet mid-week morning but I parked at the far end of the car park (any further and I'd nearly have been in Rotherham!) more or less at the opposite end to the shops and the few other cars there at the time.
Came back an hour later and the car park was busier near the shop, then there was about 3/4's of an empty space between these and my car ... and the two cars parked either side of it
My other slightly related thing, back from when I was a commuter, I used to get a Doncaster-Chesterfield train (XC Leeds to Southampton Central) that usually had about 5-10 minutes dwell time at Sheffield. I'd always get up at Sheffield and stand in the vestibule of the door that stopped nearest to the subway on Chesterfield. If I closed the door at that point, or it closed automatically, it 'd usually open straight afterwards because someone wanted to use it to get on board, even if it meant going out of their way to do so (to the point of bypassing the still open door of the next carriage sometimes, once I'd noticed this behaviour it was hard not to see it).
Going slightly further off track, the only reason I'd get up and stand at that point is because a large amount of men getting on the train at Sheffield appeared to be unable to just sit down without spending 5 minutes blocking the gangway whilst taking their coat off, folding it up nicely, putting it on the luggage rack, getting their laptop out, putting the laptop bag on the luggage rack ... etc ...
