Plastic in its various forms is an incredibly useful resource. It enables us to make long lasting, lightweight, relatively strong items of use for not a lot of money. Sadly, it is also incredibly misused...
There is very little need for plastic bags, packaging or that of similar use other than it is very cheap. Wax lined paper, paper bags, cardboard and natures very own packaging, such as oranges, bananas and potatoes is all you really need. Slightly more expensive, but recyclable, maybe slightly less convenient in that they may break in damp conditions but then, plastic bags can fail randomly! Too me, its not a huge leap of faith to ditch wasteful plastic use...