Wanna talk about ecology? Because mining gold is one of one the most polluting industries where the Mercure is used at an industrial level and thrown into the rivers without shame. Yes, you will say Bitcoin use a lot of electricity and this and that. Bitcoin uses the energy of a city with 250k-500k citizens perhaps, which is very very less than the traditional banking system, or let says less than what use Visa/Mastercard together
Good points too. There's a lot of exploited people in gold mines getting slavery tier wages to risk their lifes. Also the terraforming required for gold extraction is brutal on the environment, they have to dig some massive wholes with huge machines, the damage takes ages to heal.
PoW is no that bad compared to gold mining. Nobody is getting exploited in PoW. As an employee of Bitmain, apparently all they have to do is keep everything in check, you can play videogames and browse the internet and go out for a while too. Im sure the wages are shit tho, but definitely better than being in a gold mine. You would need to deal with the annoying fan noises, but you aren't at constant risk of being collapsed by tons of dirt.
Honestly mining gold should be banned. For how long are they going to keep perforating the earth in search of more and more gold? And what about oil? they are also damaging entire seas because of this bullshit.
It's time to replace gold with bitcoin, and it's time to replace oil with cleaner energy sources. We don't need gold anymore as a store of value. Bitcoin does the job way better, doing things gold could never do, and without the downsides of environmental damage.