120 blockchains?:O little too much
crypto is hope , hope in price will increase and that's all

Yup, crypto is essentially a modern-day ponzi/MLM scam.

None of it has any inherent value. Except if arbitrarily receives some value, temporarily, before it crashes, from investors who want to believe in it because they are hoping to get rich quick off of it.

But really, the vast majority of them are simply going to lose all the money they gambled on it.

There is one disturbing difference though, between traditional scams like ponzi/MLM and the new crypto scam, and that is: the media and government institutions generally endorse crypto as if it's a legitimate thing and not-a-scam, thus misleading the public to gamble away their money.

the question is when will it crash , hope soon

It would be more akin to the South Seas Company.

Bitcoin - not likely, but would be hilarious to witness twitter collectively implode.
Ethereum - likely from the Eth 2.0 merge in the future, or the process to it, or the initial proof-of-stake model shenanigans
Other alt-coins - crash all the time. Lots of "dip" memes.

Lol, I didn't even get why we traded in our precious metal coinage into paper IOU's let alone into plastic or electronic pulses. (Well, I do but I have to look dumb in order to fit in).

In the end it's just a matter of accepting it, if a large enough portion of the population does it then it becomes a viable means of payment.
Actually that was true for metal coins in the past as well, some were ranked AAA, Florences from Firenza and Thalers (=> Dollars) from Joachimsthal for instance, while others weren't considered strong currency.

As for waste of energy, yeah true but then the argument can be made that playing videogames or watching YouTube is a waste of energy and time also.

IMHO NFTs are just a desperate attempt to get people to pay a lot of money for essentially nothing.

The problem with all digital art, currency, etc....

... if the internet goes dark...

... you've lost both your "thing" and your claim to said "thing"

The blockchain is great in the best of times, but in the worst of times, tangible assets are the only thing you can count on

If you can't get to your digital wallet, you're screwed. If you can't access the blockchain, you have no claim. Period.

tbh if the internet goes dark this will be your least problem
more like how to get food medicine and not be mugged by gangs

My family is emergency management. We think in worst case scenario.

And I wouldn't think the internet will not artificially go dark for awhile

Well, yes. However, do consider money is also essentially a "nothing" we have accepted in our day to day lives through convention and out of commodity. In that regard NFTs are perhaps less preposterous than they initially seem, but I highly doubt they will serve any social function or gain any traction in the long run.

Precious metals? :P And what exactly makes them precious beside scarcity? If someone pulled a gold-rich asteroid in orbit and we'd have it in abundance would it make sense for the world economy to collapse?

Also, a fun thought, if uranium were nicely golden and shiny instead of gold, perhaps we would not be having this conversation :). Not that the more common type is very radioactive, but it is toxic, much like lead.

You pay for a receipt.

Basically you go to a gallery and pay $5000 for a receipt for a photo of a painting - not the painting itself. Also you get a copy of the photo (yay!). Ain't that a thing?

Recently I tried to pay in the local supermarket with a copy of a photo of a money bill on my phone. The photo had a unique blockchain signature. I really don't get why everybody started laughing.

Well, yes. However, do consider money is also essentially a "nothing" we have accepted in our day to day lives through convention and out of commodity. In that regard NFTs are perhaps less preposterous than they initially seem, but I highly doubt they will serve any social function or gain any traction in the long run.
Fiat currency is nothing.

There are very real forms of money / currency.

Nice uranium teeth. *bling* :D

The biggest issues with cryptocurrencies are

1) they are super volatile.
2) not backed by real actives.
3) financial capitalism with "making money with money to make more money (with no real goods involved)" is already as bad as it can be - just look at the state of global economy even before covid-19 happened, but this is the next level - making money by doing nothing but consuming electricity.

4) Not only crypto rush creates shortage of computer parts that could be used not only for entertainment (even that is bad - a few years ago $3500 was enough to make pretty much top gaming PC now you have to pay more than 3k for just a freaking video card) but also for serious scientific research or industrial development (yeah, GPU computing was designed with science, engineering and games in mind)

And then there's just sheer stupidity. I know a lot of people who are into crypto mining being "green energy" well... fanatics... and they don't even realize simple fact - crypto mining consumes more electricity than a HALF of whole world's industries or to put the matter in easier to understand perspective - more than all homes in US and Russia. And where that power comes from? - 50-70% from coal power plants... Pollution goes brrr...

P.S. I know that shortages aren't happening because of miners but also because of scalpers and very high demand because of covid situation but they contributed a lot.

(5) If it's any good it will get taken over by those in power.