Well I'll Be Damned: bagging your own groceries

This is a bagging station. You arrive here after you've buy your groceries at the market. 
You see, in Japan you pack your own groceries, some stores even require you to bring your own shopping bag or purchase one for 5¥.

Each station is well-equipped with packing supplies – paper to wrap breakables, a damp rag to help fingers open clingy produce bags, clear tape, and cardboard boxes.

The system works for many reasons one of which is, relative to the States people buy smaller amounts of food, so there are no waits or traffic jams.  Oddly enough, I find I like packing my own groceries. What do you think?  Is it better to keep costs down and pack-your-own or do you prefer the service of having your packed tomatoes at the bottom?