I can't believe "Bitcoiners" are still "on the fence" and talking about Ethereum...what you still don't get after Hearn made it pretty clear, is that Bitcoin is also NOT a currency, it has failed as a payment system, it's a complete joke.
Ethereum can of course be a currency - anything can. The Euro is a currency even though Mr Draghi announced yesterday it was formally worthless by offering to pay people to borrow it.
Maybe what you "still don't get" is why researchers spent 20 years trying to come up with something like bitcoin in the first place. Up until 2009, there was no "gold" analogue on electronic networks - an uncounterfeitable token that could be directly transferred peer to peer in the absence of a trusted counterparty. The bitcoin phenomenon broke that duck.
The best that can be said about Ethereum in terms of
store of value metaphors is that it's a leaky hot-air balloon. The "hot air" comes from the speculative expectation of accrued value. The "leaky" part comes from 2 sources:
[1] - the huge emission trajectory
[2] - the diverse range of investment targets that will be created by the ecosystem (i.e you're going to have to decide if you want to invest in the assets or the tokens and, although the capitalisation of the tokens will boost the value of the assets, the capitalisation of assets may not to the same for the tokens since many or most of them will be blockchain independent)
Ethereum can go easily to $100 this year, $50 is a very real chance now not..... if it ever gets adopted and companies, banks and institutions around the world transactions and contracts would cost in Weis (like Satoshis) not $50 or $200...
If Ether goes to $100, it will only do so if Bitcoin goes to $6000 IMHO. People are not trading the ETH/$USD market, they're trading BTC ratio who's trajectory is a whole different prospect from what you're citing. The bitcoin reward is getting close to halving. Ethereum, on the other hand is about to spew another 20 million coins into the supply over the next 12 months, shrinking your holding as a percentage of the coin supply by 28%.
What will people do in this circumstance ? One of three things:
[1] - use it to build assets, companies and blockchain-based products who's value DOES continue to accrue regardless of the value of Ether tokens
[2] - dump it into a true, store-of-value bearer token such as bitcoin (or equivalent such as Dash where it even earns a return)
[3] - hold Ethereum tokens, do nothing with them and watch them lose value against Bitcoin (even though they may gain value against the $USD)
...and that's exactly as was intended by the designers