If someone goes and draws a line and says, ok we have learnt enough, then all that we have learnt up until that point would be useless. We are nothing without our striving for knowledge. It is human nature to explore and discover, and to be honest why should the American Government look after other countries, its not their responsibility. There is plenty of organisations out there, if you are so motivated about feeding the poor, how about you start sending money over to these countries, which i might add America is already doing. I think NASA and ESA are two of the best things going in this world, the money and setbacks are nothing compared to the discoveries made daily by NASA and other space agencies worldwide.