I do tip for takeout, but tipping culture in the US has just gotten ridiculous. Doesn't feel like I can go out and purchase anything now without the presumption of an added tip, and it's not 15-18% anymore, it is 20-25-30%. Just pay these people a little more, charge a little more and stop forcing me to guess what an appropriate tip is for an AmFam Field concession worker who is simply handing me a bag of peanuts or a shuttle driver in Vegas giving me unsolicited gambling advice that I don't plan on taking anyway.