It's kinda rude to call people delusional, but I'll try to respond in good faith.

Firstly, I'm entirely aware how crazy I must sound when I speak about a post singularity world, it seems so far out and different to what we're used to that it's hard to wrap your head around.

The general concept behind it is that technology will advance at such breakneck, exponential speeds that it'd be impossible for us to predict what's coming next. Imagine dozens of discoveries worthy of Nobel prizes being made every day, then hour, then minute, then second.

This sounds fanciful, but with a self improving AI it's not beyond the realms of possibility. We humans think of ourselves as intelligent, but that's only in relation to other living organisms, there's plenty of space for improvement beyond what we're capable of.

At the moment we have quite narrow AIs, such as those that create the visual art you speak of, but they're still advanced compared to what we had only a short while ago. AI research and progress is moving at a very fast speed, which is partly why you'll find such enthusiasm in this sub at the moment.

If this technology continues to progress as it is, it's not unreasonable to assume that in the coming years we'll have an AI with an intelligence equal to that of a human. If that AI is able to improve upon its own code it'll soon surpass human intelligence, by the nature of exponential growth it wouldn't be long until it surpasses the intelligence of all humans combined.

At that point is it really so crazy to imagine that it could devise ways to solve any of the challenges you've posited? Would Governments even be able to control, or understand it? That's the kind of question we should definitely be asking, as is why there's such a focus on the 'safe' development of AI.

Again, I know how crazy this sounds, but this is a sub about this very concept.

Have you ever heard of atomic assemblers? They're advanced 3D printers that print in any element at an atomic scale. Ribosomes are a natural example of an atomic assembler that produces only proteins. The difference is that our atomic assemblers will be microscopic robots that can work with any element.

Imagine you had a home atomic assembler. It would be capable of making anything you need to survive, given access to raw atoms and electricity. It could make food, clothes, your house, solar panels, batteries, medicine, and even copies of itself.

That is what a post scarcity world looks like. There's no point to hoarding resources when a shovel full of dirt + the air around you contains all the atoms you'd need to make almost anything to could want. Nothing goes to waste because atomic assemblers also offer the possibility of disassembly making perfect recycling a possibility.

Even land would no longer in short supply. A person with an atomic assembler could build a life of luxury anywhere, even on marginal land that today is considered worthless. No need for infrastructure, access to water, employment or anything we need today.