This is exactly your problem.
Everyone who is willing to donate some money to the site do not have the means to do so on their own. And of course, as a parent, your child comes to you and asks "can I send some money to some guy on a website, please?" You're going to say no .
Everyone who is able to donate money under their own supervision, seem not to have the will to do so...
Then you get the suckers in the middle, like me, who foot the bill for everyone else! I'm not saying that I'm the only one that has donated, or that I have donated the most (because I certainly haven't), but given the website's usage, I do feel as if I am in a very very lonely group of people.