The future is already here. One day or another, people will stop using cash. It is just like old computers or old USB. Cash will become obsolete. Technology gives us new solutions and new possibilities. Pay attention to the fact that cryptocurrency allows us to improve our society as well. We can do business more easily and we can do it without banks. Cryptos can help us solve some socioeconomic problems we have in our society. It will make some new millionaire and this is good. Definitely it will kill cash. I believe it will happen in the next 50 years.