> no one else thinks about your hair besides you

To expand on that, my favorite quote (from Eleanor Roosevelt, who seems to have been quite quotable...):

"You wouldn't worry so much about what others think of you if you realized how seldom they do."

I totally agree. People are almost 100% caught up in themselves, and barely have time to think about their own family, much less friends, acquaintances, and last of all strangers.