Charity should not end at home
To mention a few contrasts: the people of the Third World consider themselves fortunate if they get clean water out of a tap (so as to avoid the cholera which, for instance, is currently menacing Haiti); never mind bottled water.
They regard themselves as lucky if they learn to read and write: secondary or tertiary education is way beyond their means. And, to take the most basic comparison of all, the life expectancy at birth in sub-Saharan Africa averages 37 years whereas here the figure is 80.