[joe007]

I can't speak for all Walmart stores, but the store in Mountain View is always understaffed with checkout lines 10+ people deep. The Target that is literally across the street has short lines all the time and people will actually help you find stuff. I shop at Target because I value my time, but I would consider Walmart if they improved their customer experience.

[davidf18]

It could be that at least some of those waiting in those long lines at Wal-mart might value their time as much as you do but lack the spare income to trade for time that you have.