This is horrible how you are trying to get your grandfather to trade his real money into a ponzi scheme. You should be ashamed of yourself. Seriously, you should really reconsider if this should be what you want to do to him.

Try "preying on the poor." But there is a difference between that and taking advantage of those who are too lazy or too dumb to balance their budgets and checkbooks. Nobody forces you to agree to pay for their services if you didn't want to use them. Ever hear the saying, "You can't rape a willing soul?" Your words are just propaganda woven into the conventional wisdom. You guys sound like ninety nine percenters if that is what you think will attract buyers. And then you guys sound like gold bugs to attract those buyers, too. Basicly, you will say anything to sell your ponzi.

Bitcoin is infinitely divisible. It will never run out. It is infinitely abundant and infinitely available to anybody who wants it, forever. Never was there any reason to create more than one because the very first one would have satisfied the entire market. Never was there any honest reason to create more than one infinitely divisible bitcoin. I think you should leave your grandfather's real money alone.

Explain to your grandfather how it is possible to multiply something that is infinitely divisible twenty one million times. Because if something is divided by infinity, then you can't make it go anywhere by multiplying it.