Depends on your perspective. It’s worth it to anyone who mines crypto and can sell it for more than the cost of the mined coin. That’s the easy part of the equations.
Is it worth it for the average crypto investor? It’s one factor in determining the price of the trades asset, but many cryptos are either cheap to mine or aren’t mined at all. So it becomes irrelevant.
To society as a whole, it will become relevant from the environmental standpoint unless addressed somehow. But evaluations need to consider that the current banking system uses power and resources. We aren’t comparing bitcoin’s electricity use to zero. Physical money needs resources, power and personnel to create. Digital money requires massive banking computer resources. So crypto’s power requirements are offset by the reduction it provides in those other systems.
As a general political answer, bitcoin mining is worth it if it keeps the system decentralized and distributed as failsafe and tamper proof. But if mining becomes dominated by only a few players concentrated in a few geographic areas, then it’s a moot point because tampering and failure then become just as possible as the current banking system it hopes to replace.
Is crypto mining worth it? Ask us again in 5 years, we’ll know by then. Assuming this Old Man is still alive.