If can make enough electricity we could make our own light to grow plants.

Significant portion of population will starve though. But energy unused by them could help grow food for remaining fraction.

If significant portion of the population starts starving then there will be all out wars, social instability, chaos, anarchy and whatnot. This could send us back to the stone age.

Well, yes, but a few working power plants would make the situation a bit better for as long as we can still maintain them, wouldn't they?

What's your contingency plan, everyone commits suicide the day the volcano erupts?

I don't have one, and it's not my job to. All I know is that civil order is a very fragile thing. We saw how things evolved with covid. A virus with a 0.2% fatality rate was enough to bring the worst recession in recent history, millions of dead, and hospitals to the brink of collapse. What do you think would happen if suddenly half the world's population can't find food to survive? They'll sit back and wait while you develop your contingency plan, or they will fight for their survival with all means in their disposal? In case of nations this means an all out war.

I mostly agree, but:

> A virus with a 0.2% fatality rate was enough to bring the worst recession in recent history, millions of dead, and hospitals to the brink of collapse.

The worst recession in recent history? I regard 2008 as recent, and as a recession, this is definitely not worse than that was.

The writing is on the wall. We just have to wait a few months for the shockwave to reach us. A lot of small businesses that closed due to lockdowns won't open again, especially in the entertainment industry.

I guess if we have nuclear we will still be able to pass the time coding whilst we starve.

Or nuke everyone else to get their food supplies.