[dhume]

Because I don't want my children to grow up in a world where someone would walk by them getting raped and ignore it. I would rather they grow up in a world where their father died to help someone.

Keep in mind when making this decision that it will still be a world where a rape victim can get ignored.

[WiseWeasel]

At least he won't have contributed to that world. If enough others followed the example, it would cease to exist. These people are what we call natural leaders, able to inspire those around them to rise to an occasion to prove their decency and humanity.