Here's the thing the government fails to grasp. The ban on plastic grocery bags is idiotic, especially when the alternative is to replace them with paper bags. Plastic grocery bags (depending upon the type, No Frills are the strongest) can be used to both carry your groceries home, put items that may leak or be damp like 4 litres of milk, chicken, meat, fish etc. and can be reused as garbage and compost bags or for things like cat litter. Plastic bags can also be recycled. Too many, put them in the blue box.
Paper on the other hand is useless for carrying anything damp, anything heavy and tear very easily which makes them a truly a single use bag. You also have to consider the effects of cutting down trees for paper (no, they're not all made from 100% recycled paper) along with their carbon footprint. Take paper bags for example. They takes up way more space than plastic bags, which means it takes many more truckloads to transport the same number of plastic bags. That equals a larger carbon footprint. In addition, as a result of the heavy use of toxic chemicals in the process, paper is responsible for 70 times more air pollution and 50 times more water pollution than plastic bag production according to a Washington Post analysis, resulting in more toxicity to humans and the environment than HDPE bags. Yes they're recyclable, as we know, many people don't bother. As a result, the material most frequently encountered in Municipal Solid Waste (MSW) landfills is plain old paper, it sometimes accounts for more than 40 percent of a landfill's contents. According to the US EPA. Things aren't much different in Canada. Once you take away the plastic grocery bag option, expect the amount of paper in landfills to increase.
I have a carload of reusable bags which are great when I go shopping. But I still need plastic bags for garbage, compost and cat litter. When I'm running low, I do a few shops at No Frills, pay my $.05 ea. and stock up. I guess once I'm no longer able to buy them, I'll have to go to the aisle that has plastic bags for sale. The ones that come sealed in wasteful cardboard box.