Why do you think some auto shop owners and mechanics go out of their way to help people in need?

How do you make peace with a pregnancy decision when you feel like either choice could lead to resentment — the father resenting you for keeping the baby, or you resenting yourself later for having an abortion?
Have you ever had a cooking test or challenge that really highlighted your skills or weaknesses? What did you learn from it?
Why are "tipping" customs in the UK so haphazard and random? Curiously, they only tip taxis, barbers, waiting staff, hotel porters, and rubbish collectors.