What's the deal

What is the deal with cashiers wanting to look at all your purchases? Really come on I've waited in line on a busy Saturday afternoon, the last thing I want is for you to ask me a zillion questions about my purchases. Yes it's new, No I haven't tried it yet, yes it looks good, interesting and like a good deal, and yes I will tell you where I found it so you can go get one before you shift ends. UGH just ring me up already and enough with the 20 questions..............