The need for miners over the years is only going to grow, not shrink. Ethereum, Bitcoin and other cryptocurrencies are growing fast, meaning that they need more miners on the system to start processing transactions and supporting the network.

In addition, mining might soon be changing in a big way. The thing that makes mining so expensive today is the ‘Proof of Work’ algorithms. These take massive GPUs and lots of electricity to be competitive. The Ethereum Foundation is working on the ‘Proof of Stake’ concept, which would mean that those GPUs are no longer necessary.

If Proof of Stake gets approved and implemented, what that means is that anyone who is an owner in a cryptocurrency can mine at a low cost. You can think of it like gaining interest on your cryptocurrency investment while still helping the network grow.