I think it’s gone up because of the cultural marking of “cheap tippers.” You see it lambasted in movies and TV (in Reservoir Dogs it’s even a significant point of foreshadowing). The scale as I understand it is:
For delivery, tip 10-20% on the subtotal based on the size of the order and the service/delivery time (and perhaps your relationship with the deliverer or business, in cases where they have a dedicated pool). Often these people live off tips and their wage doesn’t even cover gas/maintenance on their own vehicles.
Dining in? Outside of very bad service, I’ll tip 18-20% of the subtotal. Service industry is hard and there’s a lot going on. Even with a bad experience, sometimes it’s not your waitstaff’s fault and they’re trying to roll with it themselves.
Take out/coffee/etc: tip 10-15% based on your relationship to the business and price. If I’m going to a pricier coffee place, I may tip less because I do have a upper limit on what I’ll tip for anything paltry (a buck or two for a latte and a muffin).
Moving guys/tradesmen: May slip em a ten if the job was a pain or they were real punctual.
