There are numerous benefits to buying local. The Portland Buy Local website lists several including...
...keeping your dollars local (studies have shown higher percentage of each dollar spent at a locally owned businesses stay within the community than those spent at national chains);
...environmental sustainability (aside from the shorter distance you may drive, or better yet walk, locally produced goods, especially food, have a lower environmental impact);
...keeping your local neighborhood unique and diverse;
...and much more.
If you'd like to learn more about buying local in your community the American Independent Business Alliance can help you connect.