I don’t agree with you that cryptocurrencies in its current form is bad news for our planet, on the contrary look how many trees are cutted to maintain the necessary amount of bills. In a way I can agree with your statement that by mining automatically appear a waste in a form of old technique In my opinion is wiser to use crypto and electronic money than the real ones. We can find in everything disadvantages and advantages. Like people who found out on https://mycryptomixer.com/
, the technology through which anonymize their transaction to be hard for monitoring. By doing this thing they can ensure themselves that no one is gonna know from where come or go crypto coins.