Maybe people don't view themselves as pitiful and want to provide for themselves rather than be dependent on handouts at some unreliable rando's discression? People on the other side of the planet can have very different societal norms that go unconsidered outside of their communities.
I've always thought sticking to 1 or 2 degrees of separation avoids issues of cultural differences and long logistical chains. And who better to ask what would really help people than their friends?
Then again, I think fate sometimes chooses you for a bit of charity work and it's wise to go along with it.