Philo 0316, to your first paragraph, people don't get rich by throwing away resources. I've known a lot of people and been to a lot of places. Most poor people (in America) are more wasteful than rich. I live far below my means, and with that I've survived the last 2 years of Obama unemployed. I'm glad I saved money. I could have been poor if I wasted resources. I think you have a misconception as to how people become, and stay, rich.
Also to your first paragraph, let's say we take that dusty money away from the rich, who have been saving and not wasting resources, and give it to the poor. Doesn't it seem obvious that more resources will be used? More people have more resources. It's not sitting anymore.
To the later, I'm being hypothetical about letting nature take it's course. You're right that I don't really believe this, but to a certain extent. I cannot turn my back on people in need. People, all people, need access to healthcare. But honestly, we are creating a new problem. We are keeping an older and more needy population. We are creating a burden on the working class, and yes the rich too.
If at any time, the wealth accumulation begins to go negative, you know that this "resource" of rich people will go away....then what? Future generations will not have this "resource" to turn to anymore.
We need to assist people any way we can, and I honestly don't advocate for letting the weak die, but we do need to make it sustainable for our grandkids, and their grandkids. For example, bill gates has enough wealth to feed the poor and hospitals for about a year. Then what? Don't be shortsighted about this, and don't treat success of others as your source. What I actually advocate for is lifting people to where they can help themselves. As many people as possible. Only then can we assist those who are unable. In other words we need more helpers. There are only about 2000 billionaires. We need more of them, not less. We also need more people in the middle class. There's lots of ways we can do that, but redistribution is not one of them. It can be a part of the solution, but only a small part. The able must be going in a positive direction or we're all fucked.