What happens if bitcoin mining stops or becomes too expensive? Is that within the realm of possibility? Are there mitigating factors, probably the adoption of renewable energy?
I don’t think it will stop until the last coin is mined depends on the upcoming future generation anyways.. it could become competitive and maybe more expensive when more and more people gets into mining which might eventually increase the total hash rate and of course the difficulty but doesn't mean it will become unaffordable since mining pools allow to share rewards.
.Hence, if miners reduces the total hash rate will drops and so will the difficulty to keep the balance.