I don't really hate it, but I find it amusing when people spend more time backing in, presumably to have a quick exit later, and they spend much more time backing in than they would if they simply backed out when they leave.
The thing I really hate is people who drive rhe wrong way in direction-specific parking lots.
Yes, that's dangerous.
In many jurisdictions it is illegal to back out of your driveway.
It’s nothing to do with getting out quickly; it’s about getting out SAFELY. My wife got CREAMED backing SLOWLY out of a parking space when some girl in a Lexus came rippin through the parking lot at 25mph and dang near ripped the back end off the car.
BUT, the errant girl was NOT LEGALLY AT FAULT because she got just far enough that her front end didn’t hit the side of our car; the back end of our car hit the side of hers.
THAT technicality, and the grief it causes should have just about everybody backing into parking places wherever they’re not diagonal. You’ll never get rooked by that technicality backing into a parking slot, and you’ll always have better visibility getting out, which always makes for a safer exit.