[whycome]

Those reusable bags are made of plastic. They degrade in different ways. How many bags did they replace when they reach their end of life? Where do they go at the end of life? How much do they cost?

The previous plastic bags may have been reused (ie for small garbage bags). Are consumers now just purchasing equivalent plastic bags for that purpose?

I think there are so many unanswered questions and the benefits can vary by region.