Vitalik Buterin (V-God), the founder of Ethereum, said on Twitter that Why is Bitcoin better than gold? I actually agree with this, Bitcoin is better than gold, both personally and socially. I used to talk about Bitcoin's damage to the environment. But gold is even worse.
If the point of argument is its effect to the environment then I think you can make a case that bitcoin is much more better environmentally than gold. With gold there has been reported of poison in the water especially on the operations neccessary to dig up the gold and in cleaning it. While in bitcoin though it kight have some effect it still does not have the chances of you getting another poisoned or worse killed and you dont strip a mountain or land to get it.