I always carry my phone with me. With Samsung Pay, that means I always have a secure payment facility in my pocket. I don't have to worry if I forget my wallet at home. In fact, with the loyalty card feature, I'm thinking of ditching my wallet altogether.
While my bank card's tap facility does not always require authentication to process a transaction, Samsung pay always requires authentication so it is much safer! And I don't need to remember my PIN as it authenticates with my fingerprint. Happy Days :)