Based on their commitment to keep to their decision it makes me ask myself how do this set of person go about their daily lives when they know they can afford those things they see around?
You should be more concerned about yourself. because those people you see in such situations, has took it up to themselves to make a positive impact without undermining how it will look like or what people will say. From a gradual process it becomes part of them. And the would later succeed.
Great people always deprive themselves of joy and pleasure to achieve great things. Success always come with sacrifice. Thats why they say, no pain no gain.