Comment by HappyRobot

They may not be more noble, but they're a necessary part for the people you describe as nobel. Charities, non-profits, and USAID workers, are there to distribute funds, do research, and audit the economic benefit of funds they are given. If a nobel person is volunteering instead of donating, it still takes individuals to coordinate and request help. If people working for non profits, charities, and aid groups quit to make money to donate, it would be harder to be nobel because there's no one who can distribute and act on the funding.