While it's true that printing money and manufacturing coins takes a lot of resources, some have criticized Bitcoin for consuming resources unnecessarily.
According to the
ATM Industry Association there are about 2.5 million ATMs installed in the World presently. Let's think that the most time each ATM consumes 100W (definitely not less than 100W as it is not a simple motherboard with just a CPU installed). This means all ATMs are consuming 6000MW a day at least. Most time they are doing nothing but waiting for a customer. Is it a waste of the resources or useful spending?