Why do people think that it's impossible for BTC to reach there? Not only limited to such factors as %s of gold, forex, stocks, equities, etc., but we must not forget that whenever the stagnancy of either miners or BTC will take place, some huge longs or shorts will take place for sure...
Even I hate it when someone says it's impossible as I'm too a firm believer that it will reach that for sure... Winklevoss brothers ain't much fools to say that BTC will be $1,00,000 one day...
I think Bitcoin will easily reach $10,000 one day, may not be for a few years as nobody can predict when mass adoption will occur. The only way btc wont reach the moon is if it's succeeded by a superior crypto currency (not very likely imho).
I would argue that it is very likely that bitcoin will be succeeded by a superior crypto currency. Its a questions of when not if. Everything evolves and I cant think of a single thing that was not replaced by a 2.0. If "Satoshi" was still actively developing bitcoin I would expect it to retain its dominate position for quite some time. He is not. And he left pretty early after its birth. I don't think bitcoin is addressing its fundamental issues quick enough to not be replaced in the not so distant future.