Let's be clear: This type of person eats a very specific kind of potato salad that consists only of potatoes, mayo, and the tears of every customer service manager that dares cross her path.
Potato salad is like chili and meatloaf. It's not a recipe so much as it is a formula with many variables. You can make it boring and bland, or you can make it exciting and delicious. There are no rules except for what's in the name.
I love potato salad because I make it how I like it, which includes a lot of spices and vegetables and other stuff. I don't think I've ever made it the same way twice.
Potato salad is a legitimate foodstuff, however- in the United States it is unfortunately a gateway substance- leading to increasingly foamy forms of macaroni-celery salad, and ending ultimately in marshmallow grape walnut kool-hwip jello salad.