You people.

When I was growing up, mayonnaise was typically the salad dressing of choice. When my mother (rest her Southern soul) served a wedge of iceberg lettuce with a dallop of mayo (and maybe a slice of pineapple), with dinner, I knew I was loved.

As for not being "proper," that characterization is only a pompous platitude. Many other salad dressings are mayo based (or use similar ingredients). If it's tasty, it works. I won't argue the caloric impact, however.