I recently tried setting up another mining rig but found out all the profitable GPUs are no longer available at all local stores in my country. According to the distributors, people have been buying GPUs in BULK since April 2017.
At this rate, can GPU mining still be profitable long term? 1 year from now? 3 years from now?
It's been going on for years just when you think GPU mining is DEAD, A new coin comes along and keeps it a live maybe not right a way but has sense it all started with BTC . so to answer your question ... it may never end for GPU's and switch to a new coin ..If all the coins mined now some how become Useless Or hard to mine with GPU's ..... there maybe a down time point in between coins but it won't stop unless every one completely gives up on GPU's ... which won't happen any time soon....
Same, kind of with some Coins you can mine with CPUs .