[walrus1066]

2) attractive store of value due to the deflationary nature (note that not all cryptocurrencies are deflationary)

Could you give an example of one of these non deflationary currencies?

[bufferoverflow]

Peercoin, Novacoin.

Even Ethereum to small degree, though Vitalik mentioned the possibility of capping the supply.

[walrus1066]

Peercoin and Novacoin have gone up by 2,000% and 1,000% in the last year.

That's an annual inflation rate of -95% and -90%. Which is nuts for a currency.

Even during the great depression USD deflation was -10% max. In Japan, where deflation is a symptom of it's two lost decades, inflation was around -1%, and their central bank is throwing the kitchen sink to try to get it to 2%.

In short, if any of these currencies were widely adopted, it would devastate the economies of those who use it, because everyone would be stuffing their coin under the digital mattress instead of spending it on goods and services.

[djellybeans]

Add Dogecoin also. It keeps producing blocks indefinitely adding 10,000 coins each time.