In the US, I’ve started paying in cash to combat the aggressive tip buttons (your options are: 20%, 30%, 40%, or Other). With cash, I feel free to provide a reasonable tip for whatever service and they see it and appear appreciative, even if it’s not the 20% the little tip screen attempts to strong arm you into.
They’re probably close to the same amount of inconvenient. The cash tip jar feels better than doing the custom option which feels like I’m specifically trying to tip less (at least that’s how I feel whenever I use it). I don’t like feeling that way and would rather feel positive about dropping cash in a tip jar than feel bad about adjusting to a similar tip on the screen options.
I know it’s stupid, but it’s just how it makes me feel when using the screen.