Yes I am aware of this, but why is that suddenly my job? I don't want to walk around with a sharpie writing down every produce I got. I don't want to sit there running through their register and system for them. I just want to get my stuff, pay, and leave. It's why we've had cashiers forever. If you're going to add my work to my day then cut prices or give me a discount.
If this helped the staff in some way that would be one thing. I don't mind being inconvenienced to help others. I don't want to be inconvenienced by a grocery store because they want to pay fewer people.