They just want a medium of exchange that changes value slowly enough that they can be reasonably sure they know what the currency is worth. If cryptocurrency somehow replaces fiat money, people will turn to financial companies and pay an extra fee so that they bring back the advantages of the fiat money.
99.9% of users will just appreciate the fact that their money retains its purchasing power (as measured in civilization supporting commodities), across multiple generations. Not just for a few years; their grandkids will be able to purchase the same amount of "stuff" with it).
Those that want to create wealth and then monetize that wealth to (for example) purchase property or businesses will appreciate the non-corruptible value management features.
I don't see how cryptocurrency enables this, because I don't think this is the result of currency being fiat. I think it's a result of currency being a token of wealth rather than wealth itself.
> will appreciate the non-corruptible value management features.
I can't comment on this because I'm not really sure what you mean by it