I can't figure out why we haven't figured out this plastic bag thing. Costco does not provide any bags at all and they seem to do plenty of business. Aldi's is another small supermarket in my area that does not automatically give you bags and they too don't seem to have any problems selling their wares. People bring their own 'recycled' plastic bags, canvas bags or find a 'second life' for an old cardboard box. Just stop it with the plastic bags and trust that people will figure out how to get their groceries home...really...they will...you'll see.
p.s. I am sick and tired of finding plastic bags flying like flags from the tops of the trees in my yard!