How much do you tip?

Assuming no pandemic, how much do you tip for eating in a restaurant? How about delivery and takeout? For eating in a restaurant, I usually do 15% of the pretax total. But I really hate the idea of a percentage. Does the server at Morton's steakhouse work harder than the server at Denny's? My wife always tips 20% of the total after taxes which ends up being significantly higher. It really adds up if we get drinks. Happy wife happy life so I don't argue. For delivery I do 10%. For takeout... How much do you tip?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Pharmacy Source Type: forums