Azaria,
I can understand how you would feel like this...because it's a completely heartbreaking situation.
There are alot of reasons people didn't respond much, I imagine. Maybe they don't know what to say, or maybe they did donate and know that's all they can do, or maybe they are in a situation where it is impossible for them to donate and they feel guilty and sad about it. All some people can do is pray for the poor people, and hope that their suffering did not last long. Unfortunately that is all I can do right now, and I am sure that is the situation alot of other people are in right now, too. Doesn't mean their hearts didn't break over it, though.
~Sarah