I stopped tipping with DD. I used to tip, when delivery was "free" (included in the menu price). But DD jacks up the menu price (which, at least around here,

I stopped tipping with DD. I used to tip, when delivery was "free" (included in the menu price). But DD jacks up the menu price (which, at least around here, is already increased to account for their own direct delivery service - they use DD to source more customers) and then adds a delivery fee - if I'm paying that much more of a premium to use a specific delivery person, I don't really feel I owe them a gratuity on top of it.