One of the challenges in adopting a green lifestyle is persuading others who aren't so green-minded that your choice is more than a personal quirk or fad movement.
While even those detractors who don't understand why you've become a vegetarian or started biking to work might profess to being pro-environment, there's a disconnect there, an inability to see clearly how every individual choice can benefit -- or harm -- the world around us. But every action we take does have an impact, however small, for better or for worse.
Until we all get on the same page -- until we all agree and understand that certain lifestyles are environmentallly unsustainable (and therefore irresponsible) -- it will be hard to effect widespread and meaningful green changes on a lasting, global scale. That's why those of us who have decided to live green need to commit to having an ongoing conversation with others about the whys, and not just the whats, of sustainable living.