RANT: Plastic Bloody Bags

Why is the BBC so intent on spending every single news bulletin of late telling us how many plastic bags are on the planet? And how much it's harming the planet and how we are all going to burn in hell unless we take our plastic bags with us to the supermarket. What the hell do they want from me?
It's really simple - if the supermarkets used paper bags instead we'll all use them instead. End of problem. Except then we'll be mentally flogged for destroying the rain forests...