sumgame, I appreciate this long and detailed response, as well as your insights. That said, here's why I think cryptocurrencies (specifically the underlying blockchain concept) are mostly redundant to us. The answer might surprise you, because it's less about technology and more about human nature and social engineering.

For something like blockchains adding "trust" to finance, I have one big problem with this. Humans on both ends of the transaction still need to conduct their business honestly for this to work. Sure, the so-called smart contracts system, like the one found with Ethereum, allows you to write an immutable record to the blockchain that dictates whatever terms and commit it to what is essentially a distributed append-only database. Additionally, if you make a mistake on a smart contract, d'oh! You basically can't change an immutable record. You'd have to append over it with a fresh one, which, depending on how energy intensive this blockchain application is, contributes to unneeded waste.

Here's where my personal issue is at with all this. Say you decide to take receipt of a delivery from Timbuktu for some fine vases. You receive the items from said vendor and, despite the entry clearly describing what you were supposed to get, you in fact get scammed with a delivery full of sand. So, what do you intend to do? The ledger can be as specific about a transaction as you want, but this won't stop dishonest people from being dishonest. So then you can settle it in a court system, bring the parties to task, and... oh wait. Why did we not just simply use a regular database and time tested ERP systems that have done the job for ages?

I guess what I'm really getting at here is that blockchain isn't some magic bullet that will guarantee specific outcomes in commerce, and in fact, feels like a different way to do the exact same thing we've done forever, but we need to cater to some kind of NIH syndrome.

Back to cryptocurrencies, why do we need so many different tokens out there in existence? Aren't they all trying to generally accomplish similar tasks? That also adds a ton of confusion and consternation, with everyone claiming how their particular cryptocurrency project is truly the best and why you need to use it over INSERT PROJECT HERE.

Fintech is an interesting space to watch, but I see way more projects with less than pure intentions trying to see if they can make out like a bandit down the line.

The world wide web, by comparison, is (and by some sources... was) a truly democratic medium. I'm not sure the same thing applies with cryptocurrencies and blockchain, which all feel like solutions in search of a problem (or projects in search of money from FOMO-riddled folks with nothing better to do).

EDIT: To your point about Bitcoin being digital gold. Yeah... it's nice sounding in theory, but at least with real physical gold, it can survive till the heat death of the universe and doesn't require the constant consumption of resources to maintain it (which I find egregious and unconscionable), as well as not requiring an active internet connection. I'm not a goldbug either, but I can at least concede to gold having a handful of intrinsic properties which lends to it being a hedge in its own right, agreed on over thousands of years in human history.