First the selling point was that "the USD can never be a reliable store of value because it's evil fiat currency controlled by a central bank, use Bitcoin instead!". This has quietly faded as the volatility of Bitcoin continues to exceed that of the US dollar by orders of magnitude.
Then it was about "decentralization", another argument that went away when people realized that Chinese mining pools control the whole thing.
Then it was all about the low transaction fees and freeing you from the tyranny of payment processors, until the fees went higher than PayPal, and now /r/Bitcoin will call you stupid for complaining about fees.
I don't even know what the current arguments in Bitcoin's favor are anymore, but I'm sure they'll be different next year.
And of course, in all of these cases, there's never any acknowledgement that the shift happened - "We're at war with Eurasia; we've always been at war with Eurasia"
It would be nice if those who hold/held this idea would come out and critically evaluate this position in public forums like this one.
Different people are attracted to different aspects of crypto currency.
You realize this is exactly what I'm talking about, right?
There's no legal, useful application of it. Just none. Every time I ask, people come and say but... but... international transfers! and I point it out that for that transfer the sender needs to buy bitcoins, transfer and the receiver needs to sell them because there is no legal, useful application of it :) And this is untenable, you can't have the receiver go through hoops to receive money. And when I compare this to how Transferwise combines a fantastic user experience with favorable rates (which I actually compared to an FX company not to a bank) then I am a Transferwise shill despite it's usually not me who brings up the transfer argument so I now I did just so we don't need to have that conversation again and again.
When you exchange at at bank you are done now. With Transferwise you might be done now, or maybe tomorrow, or maybe they'll cancel the deal because the market moved.
It's a fine product, but the difference in risk profile needs to be taken into account when considering the price.
I have never heard anyone outside of the deepest idiot-evangelists call it a "stable store". I've heard it call a good investment, but that is a wholly different beast.
The only goalpost moving going on here is you hoisting the intention of Bitcoin as a "store of value" rather than the stated goals (decentralized currency, universal ledger) and practical uses (speculation, Chinese currency escape).
The network relies on having a large ecosystem of miners to prevent anyone from mounting coordination attacks. Those miners are paid either by new bitcoins (out of the finite supply), or by tx fees.
It really can't be, though.