Red Dawn, exactly. I tip out of FEAR. Man, these guys are bringing food to my house. They have my phone number and address. I want to be able to order from these places again, thus, I tip at least avg amounts. Certainly I Don't skimp. $1.00 for a $35 order... sheesh.
OTOH, Pizza hut is getting pretty 'spensive and they charge for delivery now. I don't know if the delivery folks get that back, but, they do add on some cost for delivery around here. Regardless, I don't want any non-pizza objects on my pizza, so, either I go pick it up and don't have to pay a tip, or, I tip well.