Why should I switch to reusable bags for my snacks and sandwiches?

The US alone adds 20 million plastic baggies to landfills every single day.  Every reusable bag you use has the potential to eliminate 1000's of plastic bags over its life span.  The snack-sacks and sandwich-sacks that we've sent out into the world in the last 2 years alone have kept over 7 million plastic baggies out of the waste stream.  That's 430,000 pounds of plastic!