I would rather be a Bumper Sticker

We are so busy in our lives that we dont spend time to get to know each other, to read each other. We rush through life speculating on our first impressions of others without understanding them. Because how can we, we don't have the time to spare to get to know the other person, to stop and understand them, read them in order to get better feel of who, what and how they are.

But on the other hand, driving down the road, we see a Bumper sticker on a car in front of us and we are willing to bend around, stretch and make ourselves uncomfortable in order to read what the Bumper sticker says.

Why is that we are willing to put in more effort to read a bumper sticker than to read a person thoroughly.