I see that more and more investors are interested in a passive income that comes from cryptocurrencies. But, I am a little bit afraid that all these concepts: staking, crypto lending, and all form of income that is generated from nothing will end up sooner or later. When you compare mining, you have to buy mining rigs at first, then you need to pay electricity, so you spent a lot of money to mine a Bitcoin and that makes it valuable. What about staking? What you sacrifice to receive new coins?