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the whole crypto space is reliant on demand. Many cryptocurrencies have limited supply, and because cryptocurrency doesn't actually produce anything except heat , demand will greatly vary. As more and more computing power is needed to produce bitcoin via mining the demand side needs to be upheld, as more and more people are required to participate in the success of the network more and more new money needs to be found. This will eventually end badly, especially for those who control very little of the supply. While those that control large amounts will constantly dump on those with little.

True assets produce the investor something be it cash from business profits, rent from housing or meat from a farm. Gold and silver can produce jewellery, industrial goods, and a myriad of decorative items that optimise it's value and keep demand high.

bitcoin and other crypto currencies produce an algorithm and a mathematical contest to verify a transaction or a process to digitally build a block in a chain of blocks. What assets do you think will be in more demand in 100 years?