Ok I am sorry but there is no point in arguing with a person who pulls numbers out of no where.
Well, in an example you use numbers. You can substitute Dollar with Sheep or whatever you like, but numbers usually helps to understand complex problems. You can alter them, since they won't change the outcome of the given argument.
It is profitable and if you say it isn't you are absolutely wrong.
By having proven you wrong by all scientific means your argument is rendered invalid. By USB Mining you loose 70% of your money. Gone. Even if you turn your calculations upside down and squint at them.
However usbmining definitely isn't as profitable as just buying the bitcoins and waiting for the price to go up.
Thats two different things. Buying an USB-Miner and using it for mining generates Mining-Profit. It's a negative value. You loose money.
Holding Bitcoins and speculate with 'em is independent of your source of Bitcoin-Income. It doesn't matter if you have mined them or if you have bought them.
Mining-profitability does not! include a rise in Bitcoin prices. Don't mix profits you made by speculations with mining profits.
Yes it does.
Nope, still does not.
Let's use your brilliant gold example. If what you are saying is true then no gold mining company is "profitable" because they should just buy the gold from someone else and hold it until prices increase. Then no one would mine gold...
Exactly this happens in roughly 90% of the known gold deposits. The costs of mining the gold there is higher than the value of the gold, so noone is mining there. On some places it is still profitable, because the gold is easily accessible and the worker costs are low (e.g. african continent).
So if I save the gold I mined now and sell it later for double its worth I make money. Thus a profit is earned.
Only a speculation profit. Again, you mix mining and speculation. And that is a plainly wrong. If the gold price isn't rising at all, your speculation profit will be zero. No loss. But the money you spent on your unprofitable mining is gone. If you bought the gold, you wouldn't have lost any money at all. Therefore, mining is a way to loose money, you won't have any gain from it.
Of course you can calculate profit from speculation into the equation, any logical businessman would. Profit is profit, even if I get it in the future. You think I am arguing for something that I am not.
Profit is profit, exactly. The mining profit is negative, roughly -70% in case of Block Erupters. The speculation profit may be positive, the future will tell. The thing is: These "profits" are two completely different things, you cant mix them and calculate an "overall profit" and then use this to draw the conclusion that "mining profit" was positive.
PS:
Ok I am sorry but there is no point in arguing with a person who pulls numbers out of no where.
I am not arguing with you, I just try to explain the basics behind the ongoing mining-fraud to you. You make some very common mistakes and I can only hope that you won't loose a lot of money by investing based on wrong assumptions.