What's all the hubbub about? This thread has the easiest answer in the world. Tips are included in anything service based to offer incentive or motivation to ensure that service is done with quality. This is especially vital when dealing with service of something you ingest.

You can say that it's not our responsibility to motivate good service, but I disagree. Not because it is our responsibility per say, but because whether it is or not, that's just the way it works. Someone has to do it. Might as well be the person who wants good service.

What do you think accolades, promotions, recommendations, and bonuses are in non service based industries? They're tips biatch. To motivate you.

Tips, accolades, and bonuses exists because working sucks, and it's a naturally depressing, grinding chore in most industries. Tips are the klonopin of the workplace, so that your attitude about being stuck at work all day away from your kids and lover doesn't rub off on the customer.