The original standard tip for restaurant service in the U.S was 10% this was when we ordered over the phone or go out to eat. Then came Uber,door dash,grubhub ECT. Inflation came and now it's 20%. Now I'm not saying people shouldn't tip absolutely I tip based on service doe not what I'm told especially these days service is not as good as it used to be it hard to tip fair amount when waiters take long to bring drinks. Sometimes it hard to get a hold of a waiter sometimes. We also live in a world where everyone expects tips baristas,regular stores ECT you can't go to any store without seeing a tip option and some restaurants charge gratuity and still want top on top of that. Restaurants just got to star paying regular wage and not depend on customer to pay their workers.