What is energy waste though? If I get more happy by mining Bitcoin than playing computer games, is it okay for me to use the energy I would have used for playi

What is energy waste though? If I get more happy by mining Bitcoin than playing computer games, is it okay for me to use the energy I would have used for playing to mine instead? I think that about 95 % of the activities that humans do professionally are a complete waste of time. Does it follow that I should be for banning these activities?