You've never been in my grocery parking lot. I love watching the tourists try to rush in there. Ain't happening. People have actually died in that parking lot, albeit in slow motion. If traffic is a river this parking lot is the Bermuda triangle.
First of all, the spaces are at a 90 degree angle and they made them super narrow.l The lanes, while purportedly handling two way traffic are really only comfortably large enough for 1 1/2 vehicles. This is a bigger problem for parking than it is for two way traffic. Unless you drive a golf cart, you aren't getting in with one go if you nose in. It's actually easier to back in.
The real problem is the old people. Them driving is bad enough but a fair amount of them walk over from the old folks mobile park and meander through the parking lot as if lost in the desert. They are the real reason I back in. When you go to back out of your spot, an old person WILL teleport behind you and just stand there. At least when I nose out I can keep my eye on them. When you're backing in they don't seem to get in the way there since their proclivity is to walk down the center of the aisle.
I realize this is my very much a personal situation and am open to the idea that Rick is being an asshole. But once I learned to back in by necessity, I've started doing it most places because it is kinda rad to leave faster when it doesn't really take that much longer to back in. I think the worst thing is just that the person behind you might be caught off guard that you're actually parking - I don't think it takes that much more time really.