There's a lot of fuss about reducing plastic usage, and one of the main reasons seems to be that otherwise it will end up in the environment, particularly the ocean. But if I dispose of the plastic correctly so that it ultimately ends up in a landfill, how much harm does that cause?
I understand that some landfills are poorly managed and this can cause problems such as letting trash blow away. How hard is it to manage landfills properly? I haven't seen any campaigning for better landfills - wouldn't it be easier and more impactful to fix landfills than to convince every individual to reduce/eliminate plastic?
If the landfill does its job and buries plastic in the ground, how much harm does that do? The main problems mentioned on Wikipedia relate to biodegradable matter. From that perspective, for example, it seems I'm better off buying plastic bags to pick up dog faeces than biodegradable alternatives.
I thought the problem might be the costs of producing plastic, but for example this article claims that plastic bags generally use less resources and produce less carbon than other types of bag. I'm sure there are some kinds of products that shouldn't be produced using plastic, but anti-plastic campaigns don't tend to mention this kind of nuance.