Most people don't care, don't want to inconvenience themselves, or just don't think it's "cool." On one hand, that's an advantage for those of us who take the time and effort to prepare ourselves. On the other hand, it's a disadvantage, because we're the ones who often have to help the less prepared.

All in all, sometimes you just have to do what you think is right and let other people do what they think is right.