All four of you are making one critical error in your reasoning. Namely you falsely assume that you benefit from the units of Satoshi's imagined number (21 million") that you call "bitcoin". But, you don't benefit from those. Nobody is able to benefit from them. You benefit from the economic resources that new investors are bringing into the scheme. Economic resource are things from which people can benefit without new investors. For e g. - gift cards. When issued and sold to people, gift cards provide benefit to people at redemption. So, whoever holds a gift card is not required to find a new buyer to benefit from the card. Another example. Debt in the banking system that the holders of banknotes or deposits own. They benefit when that debt is paid, as I already explained in this topic. So again, they don't need to find new buyers to benefit. Capital. From capital people benefit because capital produces goods and services. Again, no new buyers required. Products and raw materials. From them people benefit through consumption or building them into final products. And again, no new buyers, that is, investors, are required. That is what economic resources are. They are things that provide benefit to people without the need of new investors.

However, from the Satoshi's units attributed to online addresses, no one can benefit. Which is why the influx of new investors is needed. Just like in all investment scams. So, try to accept that Satoshi's tricked you, instead of trying to find countless excuses for his scheme.