I have been pretty much plastic bag free for four months. I get miffed with myself when I forget to bring my totes to the stores. I am not a raging environmentalist, but as a grocery shopper who hits multiple stores and farmers' markets a week (often more than two purveyors/day) I have long despised those flimsy plastic bags and have readily embraced the trend to reuse sturdy shopping totes. If nothing else, they are so much more practical.
This link might be of interest
I've been using
BlueQ bags.