It is? I haven't tipped in years, whereas I did in the 1990s. Maybe because I never pay with cash anymore. Then it was common to round up to the next multiple

It is? I haven't tipped in years, whereas I did in the 1990s. Maybe because I never pay with cash anymore. Then it was common to round up to the next multiple of 5. Even so, I never have had wait staff asking for a tip.