I determine the tip based on quality of service. An average reasonable experience gets 20%, good to excellent gets more. I think the best I ever tipped was my tattoo guy and the tattoo was about 100 and I tipped 50 or 60 bucks .
I just have no aversion to not tipping if the service is really horrid (like at the dennys).
I don't tip for take out except for if its one guy i know that im friends/friendly with.
Edit: The first post did sort of make it like I was saying that but I think it became clear towards the end of that post when I was like i even tip take out if its complex. Who would tip take out and not every instance of sit down. It does sort of make sense now how angry people got. I always tip dine in unless they really suck and are mean. I rarely tip take out. I also tip other things well.
15% for adequate, most time i just double the tax which is 8.75, take out gets a buck sometimes, someone does spend time packing it.
i miss europe, tipping is 1 to a few euro and done