I don't think we in the western world have responsibility to try to help people who are unwilling and unable to improve their own societies. The problems in the developing world are not as much a product of colonialism as much as they are the product of bad institutions and an incapable populace.
I think it is undeniable that western civilization is superior to other less rational, less capable, civilizations. I don't think other peoples are necessarily capable of becoming westernized in the sense they can form functional societies. The arabs think by build glittering cities and starting airlines with their oil money they are modern countries. But everyone knows they are backward heathens whose oil would still be under thousands of feet of sand if it wasn't for western inventions and ingenuity. There social structure is 2000 years in the past as well.