Crypto claims to be a solution to this, but in practice approximately all crypto transactions go through a middleman (exchange) which takes a cut. It's unreasonable to expect your barista to go through the effort of accepting crypto payments without involving an exchange.
Cash doesn't have this problem.
I'd love to be proven wrong about this. Is there a digital payment method that runs on phones that doesn't subsidize a middleman?
Unfortunately, culture in many countries is to tip in certain situations, especially in restaurants, even for normal service. But just because it's culturally normal to tip in restaurants in your country doesn't mean you'd tip a giant corporation like Visa. That's not how culture works.
If the conceit of tips is that they incentivize good service, then tipping before you receive the service is nonsensical.
This culture is socially policed and has nothing to do with service, or whether tips are split, taxed, or whether that part of the country already abolished sub minimum wage
And what am I getting when I'm sitting down? The restaurant should be paying this person to bring me my order just as much as they pay the cashier that rings up the order "standing up".
The whole thing is ridiculous and we're just pandering to a very vocal and particularly nasty minority's opinion (just look at "tipping" subreddits and Facebook pages to see the toxicity, entitled-ness and hostility towards customers).
And because it's unpalatable to say these things, we've all collectively come up with post-rationalizations as to why we should tip and how it'll go horribly if we try address it. "Oh but if you don't tip the employer won't pay them" and endless variations of that and "a ha, but you didn't consider this" gotchas that effectively make this an un-discussible topic.
People worked hard to get some sort of "minimum wage" and then we all collectively allowed tipping (Edit: service worker's that get tips) to be exempt with some sort of "make up for low tips so they get minimum wage anyways" complicated setup that added yet more ways for employers to shaft these "suffering" workers.
The price for food i see includes all costs, ingredients, service and preparation. Only in North america does this weird pressure exist to pay service workers extra, untaxed money.
Generally my rule is 10% tip for bussing and 10% for taking and bringing my order.