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?
Just like mining and proof of work where you invest your money in buying mining rigs, with staking, you spend money buying coins to be used as collateral in order to start earning. Considering both mining and staking, you need to spend money in order to earn or receive new coins. Both mining and staking require you to invest money to receive or earn new coins.