I typically go to the grocery store multiple times a week for fresh items. Usually have 4-8 items and almost always use the self checkout.
I like to avoid at all costs mouth breathers. People who make small talk for the entire time their stuff is being bagged and then decide it's a good time to look for their card when they are presented the total. That or the people who need to find exact change. I get wanting to use change but searching for a minute or two for that 2nd penny rather than using the dime you have in your hand just makes you a tool.