There is a reason WV says that only 1 in 4 makes money out of the company (~75%). Because they have nothing to hide - transparency. From the other 3 members, 1 is either just using the service/product and chooses to pay the monthly fee and exploit its advantages (just as we do for services like Nova, Cytavision etc) and the other 2 just did not work the system correctly or were just unlucky. If this thing worked for everyone it simply wouldn't work
That is why I do not believe that this is for everyone, but it would be wrong to say that NO ONE should do it. And some people, like me are willing to risk the chance to be one of the successful ones (doesn't mean I have to buy a Ferrari out of this idea in order to be successful).
If I tell you that you have a 25% chance to win some money of out this business, you always look at the 75% that you won't and pull away.
Well why do people play the lottery then? It is slightly different but they only reason people choose to play the lottery is because they actually don't have to do anything and could easily win a lot of money. Nothing wrong with that.
In WV you have to work quite hard (unless you are more lucky like some people who make a lot of money just by recruiting several members) in order to accomplish the "Get Rich Quick Scheme" that's what makes it more believable. If it was easy, everyone would do it.
So don't say it does not work. Just say it might be hard (may even be easy) to get it work and then everyone can make their own choice whether to invest their money or not in this idea.