People are making roi calculations with current conditions. We must calculate that the reward will half and the difficulty will increase as mining speeds will go sky high. ( there goes moore's law ) BUT dont forget that demand is steadily increasing, as you know, people like money. So expect price increase. This will give better returns for people with asics anybody else stuck with the old equipment will be at a loss, unless their electricity is free. So, I believe people who invest in the smallest Asic device will get a return on their investment. It just may take longer than they expect.
Of course there may be new version asics with higher speeds but nno major breakthroughs for at least another year or so. I think this will be enough time to make your money back and enjoy a little profit if all goes well for BTC.
this is how it works money makes money if u are broke now you will keep broke then...i bet on that..it,s just the way it is..
To all broke guys preordered 1 or 2 ASICs devices and talking LOTS of crap i say this: Who thinks to get rich when they get there.. are dump mf sorry to say so..wake tf up.. and i don,t have to do the math for u because there are enough posts about that ( hash rate, difficulty ect.ect.ect...)