I believe that people should bring their usable bags when they are shopping because plastic bags are bad for the environment.
Plastic bags last forever and don't biodegrade well. The ones that are burned put poison into the air. If they become litter, they can end up in the ocean.
Even recycling isn't a good answer. Did you know that the energy it takes to recycle one plastic bag could be used to power a computer!!!
Plastic bags also kill wildlife and animals. Animals often mistake plastic for food, and they can get sick from the poisons in the plastic. Sometimes the plastic gets stuck on their bodies and then they grow like that.
In conclusion, we have to recycle, but we also need to clean the plastics out of the ocean, then stop using plastic in wasteful ways. Then animals won’t die and the environment won’t be bad and dirty, which will also help people to be healthy. For these reasons and many more, you need to use your usable bags when you go to shopping.