Monero, maybe litecoin, maybe dogecoin, or perhaps a new currency 'will be' created and will replace 'all. Monero is an interesting alt btw
That's the whole point of crypto community. Speculation, speculation and speculation.
Any commodity price is almost all about speculation.
A friend of mine, who is making his doctoral degree/dissertion in the university of Haifa something about oil (I am not quite sure yet what is his field in this issue - and I guess he do not have full assurance himself as well since the process and reading & studying of the matter is in the beginning stage), told me once, even as much as 90 % of oil price is speculation.
I like the fact that Poloniex has started offering marginal trading. It enables more speculation to the markets and thus increases the stability of the markets. If you feel like dumping, then there are people who want to buy your coins and if you feel like buying, then there are people with marginal positions who want to fulfill your desire without causing massive panic buying to the market where some emotional people may get hurt and end up bitter and desperate bagholders.
The only problem in cryptomarket it's that there are no stable or "calm" periods. There is or PANIC SELLING, or PANIC BUYING
That's pretty much true currently.
But this is because the markets are not liquid enough.
Let's say I want to convert 10 000 usd (which doesn't even buy you a new car) worth of Moneros, it basically leads significiant red candle in the markets.
The markets need to be liquid enough to absorb selling of millions of dollars without causing panic to anyone. For this the (skillful) tradders are needed. They buy when others want to sell and sell when others want to buy, and in order to make the markets to both sides you need a significiant position of both currencies.
Like gold bullion, it is traded mainly by the central banks and therefore it is pretty liquid market and if I want to sell 1 million euros worth of gold, I could do it probably pretty easily in Helsinki selling it to a few places and the spot price is not affected at all. The same should happen to Monero. Monero needs some really wealthy people making the markets and being interested in taking it any time.
It can reach this mass if the overall trend of Monero is bullish. Anyone wants to own an asset that appreciates (it doesn't need to appreaciate 1 % per day - that's too much in the long run) but even 0.01-0.1 % daily appreciation is giving enough incentive for the rich people starting to accumulate Monero.