There’s going to be enough $$$ sent—mine won’t make much difference.
First of all, there’s a logical problem with this—if everyone thought like you do, no one would donate, and there wouldn’t be enough sent. Secondly, who are you, Einstein, to know how much money is needed. If you wait to find out in six months exactly how much money the disaster cost and how much more was needed, it’ll be too late, people will have died and suffered needlessly.