That's a deeply cynical opinion of the world's humanitarian aid charities. I couldn't disagree more. After the US army has been and gone it will be the likes of Red Cross/Red Crescent, and Medecins Sans Frontieres who will provide ongoing medical support to the recovering community. These charities all declare breakdowns of where the donated money is spent. The initial relief effort has been hampered by a number of factors, but your claim that the Red Cross aren't really there to help people but simply to promote their brand and accumulate wealth is way off the mark. The people of Haiti will be in a much worse position if these groups are not present, and without donations from the public these groups would not exist at all.
Maybe you're trying to justify your decision not to donate, and to some extent I'm trying to justify my decision TO donate, but I don't think you're representing these groups fairly with your statements.