I doubt GPU mining will die anytime soon.
GPU mining is already dead for 95% of people around the world, from the remaining 5% that can gpu mine right now or are mining right now, the 1% from those have extremely cheap electricity and very low government import tax and those people are the ones that will survive the red line that we are going through right now, 2% of those people are barely paying the bills and the remaining 2% of those 5% are mining at loss. If this does not mean gpu mining is at worst since its inception in 2009 then I really have no idea what can be worse than this for majority of people.
Maybe for you gpu mining dying means all cryptocoins dying too, cause pow requires at least few gpus asics working to make a transaction which means for you if you think like that then gpu mining will never die unless all coins die too.
You need to understand that even if bitcoin crashes to $1, there will still be people with an asic or gpu letting bitcoin transactions working. So using this concept then no cryptocoins will ever die.
So to sum it up when I created this thread I meant to say gpu mining profitability will die to most people around the world with the arrival of asics and fpgas and as it stands is what we are seeing right now, so this thread came to be truthful to its word.