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I buy Bitcoin to spend them at the hair saloon. I buy the bitcoins, my hair-dresser sells them it evens out the supply and demand and make the bitcoin act as a value token.
I have no place to spend steem dollars or any reason to buy them instead of Bitcoins for exchange medium purposes as Bitcoin is more proven. A 100% speculation driven demand can't last forever, there has to be a real demand for the token to use a medium of exchange or something else, in this case I had imagined there be sinks for it in various features on the sites but I can't really find any.

Ok, but when bitcoin wasn't popular it was like this. There was normal physical cash, accepted everywhere, and bitcoin, which was not as proven as now, and not accepted anywhere. But it was growing and growing and now have it's position.

Yes, but we already have Bitcoins so why would we want another crypto-currency for trading goods. No one uses altcoins to buy goods and services ... and if no one had started doing it with bitcoin it's value would be zero by now. The speculation can last for a long while but in the end it needs to pay out with a real use for it. Some crypto-currencies have better anonymity or better integrated features for crowd-funding and so forth and can last this way by adding to the financial functionality of Bitcoin.

The only way to use the Steem Dollars I can see now is to buy influence or to promote posts. Are the tokens destroyed when promoting posts? If the inflation also redistributes the Steem and Steem Power ownership ratio toward the most active users maybe it could work. Still I think there needs to be more on site ways of using the tokens really....

Bitcoin buy for trading on the stock exchange , for example Poloniex. Invest in bticoin and hope that someday he will rise , I do not see

Well, i think that steem is also a money, like bitcoin, but to earn bitcoin you have to mine, to earn steem you create content. It's a blockchain money and social network at the same time.

But the base and lasting value comes from the goods and services actually being traded with Bitcoins. If there are no good and services being traded with the token ...

Steem can be mine as well as Bitcoin, is not it?