For me it was a sense of obligation which was brought home after reading this in the Selfish Gene by Richard Dawkins: No doubt some of your cousins and great-un

For me it was a sense of obligation which was brought home after reading this in the Selfish Gene by Richard Dawkins: No doubt some of your cousins and great-uncles died in childhood, but not a single one of your ancestors did. Jerry Seinfeld then cemented my fate with "Don't break the chain".