Yes, We need to change but changing should be a good way. We are doing everything for earning money This is the final expect I think all are agree with me. But we can earn money when we do the best thing for the future and no harming This is a good way of changing. We can be a millionaire with doing best thing for future Hope most of are agree :-)
I also think that there is nothing wrong with that we will make some money on such an innovative solution as cryptocurrency. Even just earning on cryptocurrencies, we popularize the crypto data technology and the blockchain.