Extreme altruism: should you care for strangers at the expense of your family?

For many years, Julia Wise wondered if she would ever meet another person who thought as she did. Everyone she knew thought her ideas about morality were strange. Some people told her they thought she might be right, but they were not willing to make the sacrifices she made; other people thought her ideas were not only misguided, but actually bad. All this made her worry that she might be wrong. How likely was it that everyone else was wrong and she was right? But she was also suspicious of that worry: after all, it would be quite convenient to be wrong – she would not have to give so much. ….[READ]