With that in mind, a battery health tool is probably the fastest way to tell how old a phone is going to feel. Otherwise nothing else is going to suffer wear and tear. If the phone is in good shape, and the specs are agreeable, then it doesn’t matter how old it is.
I see this comment every now and then, and it always forgets the cost of the transaction, confirmation time, and of course, the need for miners to exist to process these confirmations/transactions. The energy cost is extraordinary, and the end user is taxed for the use of their own dollars.
It’s not really feasible on a broad scale. Bitcoin is a holding stock, not a valid currency. Its value only increases because it manufactures its own scarcity. And as its scarcity increases, it naturally moves toward centralization since mining becomes too large an activity for the individual to reap any benefit. You can argue for proof of stake to eliminate the need for mining, but then you open the doors to centralization more immediately.