My dream for the last few years has been to experience 4k (gaming, video, productivity) before my vision gets worse (I'm 58 and a diabetic). My last upgrade was from a 23" 1080p TN/660 Ti to a 27" 1440p IPS/780 Ti, two years ago, and it's great, but as I said, my vision gets a little worse every year, so the 4k upgrade should help a lot.
I've been waiting until GPU technology can run a 4k monitor from a single card, and the GTX 1080 is so close, but I'm really waiting for the 1080 Ti. Winning this contest would put me that much closer to my dream!