The waste from BTC is impressive.
Then all work is waste. Quit your job, if you have one.
How long can the suckers fund the "miners"?
Longer than you can fund the instaminers.
Keep buying. Use your retirement.
None of us will have a retirement if we depend on government. The government creates money that doesn't require any work, which makes it more and more worthless. So keep buying other currencies that are also worthless.
Not all work is waste, but not all labor creates value. Given that there are more efficient alternatives, POW is pretty wasteful for most use cases. There may be some scenario in which it makes sense, but I don't think a global currency ledger is one of them.