I'm sure every PC Gamer has hooked their PC up to the Big Screen a few times to see what the big deal was about gaming in the comfort of your couch on a big TV, & chances are you unhooked it & returned to your desk space because you have become accustomed to the higher Dpi of your smaller monitor & the HDTV just didn't look as good to you.
fast forward to 4K & you can finally get the high Dpi that you love on a 1080P 24" monitor in your living room on a bigger screen.
Edit for clarification: because people don't seem to get that the 'Comfy Couch' thing was just a joke dealing with the back & forth between PC Gamers & Console Gamers because I remember seeing some Console Gamers on NeoGaf use the Comfy Couch thing as a reason why they liked console gaming more & it became a running joke.
Simply put 4K is going to let PC Gamers game on a bigger screen.
fast forward to 4K & you can finally get the high Dpi that you love on a 1080P 24" monitor in your living room on a bigger screen.
or you can stay at your desk & geek out with a 48" monitor like a mad man.
Edit for clarification: because people don't seem to get that the 'Comfy Couch' thing was just a joke dealing with the back & forth between PC Gamers & Console Gamers because I remember seeing some Console Gamers on NeoGaf use the Comfy Couch thing as a reason why they liked console gaming more & it became a running joke.
Simply put 4K is going to let PC Gamers game on a bigger screen.