Why is it that some people, who do not use cex.io, constantly state as a fact that nobody can make any profit there despite some people who actually use the service claiming that they do indeed make a profit.
1) Because they can do math.
2) Because they can distinguish between "mining" and "day trading" (neither of which are actually truly happening at cex.io, but that's mostly semantics).
3) Because the overall price trend of GHs is steadily downward.
In more detail:
1) It is
not possible to profit via mining
alone at cex.io with the current price of GHs there. This isn't up for debate. You can scream about it all you want, but until difficulty slows down, you just look like a fucking moron that can't do math.
2) It
is possible to make a profit at cex.io via day trading, though only because there is a steady supply of morons lined up waiting to buy your GHs from you at a price that will never,
ever ROI. This is the "greater fool" theory. Some of these people will, in turn, make a profit of their own. Many more of these people will actually lose (because of point 3), and this too is not up for debate. Math is math, and isn't subject to your opinion.
3) As Bitcoin difficulty increases, each GHs returns less BTC back to the holder. I don't know how many times I have to repeat this before the never-ending stream of morons gets it through their greed-addled skulls, but this is
also not up for debate. In a free market, this steadily erodes the value -- that is, what some fool is willing to pay for it -- until the value basically ceases to be meaningful. At cex.io, such free-market conditions may or may not exist. This
is up for some debate, and I won't pick a side in that discussion. But as an investor, you have to ask yourself which model you prefer -- (a) a free market where the price is steadily going down while you're holding it, or (b) a manipulated market where the share value is essentially arbitrary. Note that there isn't an option C, no matter how badly you want there to be.
That's as clear as I can make it.
Individuals may profit, but the math says that such profits are the exception rather than the rule. And no, that's not up for debate either.