Even among the incredibly predictable "omg USA so backward tipping lol" comments here, there are a lot admitting that tipping still exists for exceptional service in certain industries.

You won't find a single non-barista in the US who thinks it's reasonable for Starbucks to solicit 20% for someone pouring your coffee into a cup. But restaurants have tried the "don't tip our waiters" thing in the US and it doesn't work.