Why is it good to have a complementary local economy?

Think of it this way: Euros (state money) and the hegemonic monetary system ruled by big banks is like a racing bike. It’s good for some purposes, but not for all of them. If you are on muddy or slippery roads and you want to take your child and your dog along with you, you will need another kind of bike: A complementary bike. Similarly, Circles is a complementary currency - a type of money which is not meant for accumulating, but for local community building and community spending.