Not only does it look awful, but it can end up staying there for years and can be harmful to animals and plants in ways you wouldn't expect. Recycle everything you can.
Recycling helps the environment in a number of ways.
It cuts down on litter, saves energy and reduces the amount of natural resources needed to manufacture new products. Much of the energy you use everyday is generated using fossil fuels, such as coal. Using less electricity, therefore, helps preserve these natural resources. Conserving electricity is easy. Be sure to turn off the lights when you leave a room, and if no one is watching the television, turn that off, too.