Tipping culture is getting weird. These days, in the mid 2020s, it seems like a tip is requested or required for nearly every service. At the same time, there's a lot less human interaction required for many restaurants and supermarkets. Instead of having a cashier ring up your groceries, you probably do that yourself at a self-service kiosk. After you scan your stuff, you bag your own items. You never need to interact with another person at all! And at a lot of fast-food establishments, you no…