Yeah I just walk by and say "no thanks!"
Our interaction is done once I pay for my items. Don't like it? Call the cops I guess I'm done dealing with the store for the day. Don't trust me? Hire a cashier, not really my problem.
I'm still pissed all these self-checkouts haven't lowered any prices. Seems like if you got rid of 30 cashiers the price of my bread should've gone down a little.