The rhetorician Callicles says that spending our time on things like debates however will lead to a life not well spent. In that we will never affirm a place in society or get the things we want. While this was based around ancient Greece some of his concept still applies to modern day.
On the contrary I believe it is in human nature to be selfish and to only be concerned with ourselves or family. We only have to look at the current state of third world countries compared to affluent nations to see that those who have more don't give to those who are poor.
I do believe that we have somewhat of a moral obligation to those suffering in poverty. I find it impossible to overlook the deaths of thousands of children from preventable illnesses, and thus believe we are obliged to contribute in someway. But it is still the case that people in affluent countries work hard for their money and have the right to use it for themselves.