But that's a big assumption to work from no? The fact that a plastic bag is going to be used more than once. I mean definitely a paper bag is less practical, but it won't end up in a landfill trying to decompose for god knows how many years...
There are loads of single use plastics in our daily lives that are pretty much heading to a landfill as they won't be recycled.
Out of curiosity, how are paper bags more polluting than plastic ones?
Also, from what I have been reading, the problem with plastic is that it's actually marketed as widely recyclable, but nobody actually recycles plastic as it is too expensive (water bottles, plastic packaging, etc...). Its actually cheaper to produce more plastic than to recycle.