Past performance is not an indicator of future results.  The landscape has change.  Your numbers are all out of wack.  I'm making negative each day after electric cost avg of 28 cents.

Saying we make $5-7 a unit is false.  

Your vending machine analogy is stupid b/c the reality is that you gota spend $2000 for a vending machine that will only pump out $1 dollar a day and will be outdated in 2 years.  That means you lose money .

and and difficulty rises with time so therefore you get rekt even more. Miners are dumb