Those extra cores will be used by games going forward as the mainstream killer app. There are already titles where HEDT i7s with their 6 and 8 cores are pushing ridiculous minimum FPS with some impressive averages, sometimes leaving 6700k/7700k behind!
That is the future, and it's time those eight slow cores in current consoles start mapping to 8 real cores in the PC... especially when next generation consoles use Zen APUs. All that increased CPU grunt will require even faster CPUs in the desktop.
That, and the ocassional encode or rendering that will become a breeze thanks to having all those cores.. Low end has to move to 4 real cores, mainstream has to move to 6-8 real cores at this point. It's 2017. We've been stuck at 2-4 cores for ten years already.
Average joe benefits even if he thinks there's a hamster on a wheel powering his PC, power users benefit even more... etc. Everyone wins with more strong cores.