I came across an interesting fact today.
The average plastic bag is used for about 20 minutes, and takes 400 years to completely decompose.
I have a couple of cotton tote bags that I take to the supermarket. I don’t make a religious duty out of it or anything. If I forget them, or I need a third bag, I get a plastic one. Even so, I calculate that I’m saving about 100 plastic bags a year.
And it’s completely painless.