I get that some MLM's are unethical, it's going to happen. The only one I can REALLY speak for is Nu Skin, who has some of the best people that I have ever known as the founders of the company. Not only are they hard working, honest men, but they are incredibly generous, and have reached out and helped so many people. The fact that you can judge these men before getting to know them at all, says a lot more about you than them.
Once again, I agree that SOME MLM's are unethical, but making the claim that ALL are so, is pathetic.