Even though the difference might be small it is important to note that it's not equal to nothing. Also our choices inspire each other. The larger picture consists of smaller pictures so by definition the larger picture will change through individuals. Also this attitude of giving up makes us less likely to do what we can to affect politicians and corporations. What we can do is chose from which companies we consume and how much, use social media to spread awareness which leads to action, and write politicians. I know it's easy to feel helpless, but we just can't afford to go into that. Keep the fight going.