I have to say I am quite surprised by people's responses. I think we do owe the world something. In many ways - future generations, those who cannot look after themselves, those who find themselves in need.
I hope that one day, if I were to contract something terrible, like HIV, that someone would care for me. In the same way, that if called on, I hope I would be able to help someone.
Without sounding too serious, come on guys, think of others sometimes! We don't do things to just get something back. It's love that makes the world go round, not indifference or selfishness.