I notice that people are always talking about ROI. Obviously ROI is a very important thing, but i also think when it comes to mining people tend to focus too much on this.
When we are talking about ROI - ASICs vs GPUs, it's usually the case that ASICs will ROI faster than GPUs, which is great.
But the thing that is almost even more important is, how much time do you profit from mining
after you ROI!?
This is the problem you never hear anyone talking about. After you spend all those big bucks on those ASICs and you reach ROI, how much profit do you get
after, and for how long!? Not very long, right?
I know some people are still mining with 7970 GPUs that have long since reached ROI, which were released in 2012, and are still profiting today.
So the real question is - which devices profit the
most over the whole life cycle of the device, ASIC or GPU.
That is the question we should be asking. Not just, how long to ROI.

Just my two cents.
