I try to do self checkout whenever i can. Cashier is one of the most soul crushing jobs, no one needs to be dealing with food shoppers

I'm the other way around, kind of for a similar reason. I like to use the regular cashier line, because it gives me the opportunity to interact with adult humans outside of my own house. And I take that opportunity to be as supportive and friendly as possible to those people, partly in order to help "uncrush their souls."

Also, I don't like fighting with trying to open the plastic grocery bags, and I'm too forgetful to remember to bring my own bags.

You’re the reason I go to self checkout. You’re seeking out social interactions in a purely business relationship. I want my avocado and grapes and to get the fuck out of there, not stand there while you ask somebody how their day was and whether the weather might be getting cooler this weekend.