>>54699202
Not OP but no there's really no answer in those threads. Those threads never make any sense at all. The very concept of "tipping" is utterly inexplicable and so is the fact people seem to think they have to tip. It all makes zero sense whatsoever.
>>54699326
>based on guilt
Why would it cause guilt? How? What's the psychological mechanism? Does it have something to do with a Christian mindset (Christians are very common in the USA)? Does it stem from their brainwashing of feeling obligated to donate money to churches to be "forgiven" by their jewish god and donating to niggerloving charities and refugee aid organizations and so on otherwise they'll burn in hell, because they're bad and evil if they're better off than poorfags and thirdworlders? And that you're supposed to give up your possessions and become poor because that makes you "closer to god" and shit? Is that where it comes from? So therefore "tipping", in other words paying more than you owe, feels good somehow? Can't make sense of it.
You've already paid for the thing, whether it's a meal at a restaurant or a simple pizza delivery, or whatever, so there's absolutely zero reason to feel guilty about anything.