I prefer self checkout except for the difficulty of using coupons, and the fact that the systems are unbelievably slow in most stores. Those are relatively triv

I prefer self checkout except for the difficulty of using coupons, and the fact that the systems are unbelievably slow in most stores. Those are relatively trivial things to sort out and then self checkout would be all I need. I'm sure there are people who would never prefer them, but I've seen huge lines for self checkout when there are almost no lines in regular checkout more than once.