Great point, I recently joined Steemit but had the same concerns regarding the currency and regarding the necessitation of a constant influx of capital. I also hold physical gold and silver and a gold money account as well which I'm still waiting on the card for. Great point, people so often see opportunities to enter the market, but so seldom see opportunities to exit the market. Nothing is guaranteed tomorrow, and at any point, especially when it comes to fiat currencies, if faith is lost, or the next layer of the pyramid scheme does not join, the value can fall away completely.