Arugula is awesome to me because it adds a peppery flavor without spiciness (or a spiciness level I can handle). Yes I could just add black pepper from the pepper mill, but I want the flavor combination from the menu, not added on by me. EVERYTHING is spicy now - it’s cajun, it’s buffalo, it’s chipotle, it’s andoule, it’s jalapeno - and I can’t eat any of that. If I want any flavor, something with a bit of arugula really makes a meal for me!
I have had a brie/jam/arugula/crostini appetizer like @Grrr describes, and it was probably the most delicious thing I ate I 2020.