F4LL0UT: To be fair, even as someone who acknowledges the awesomeness of console gaming I have trouble to find a good reason to get a next generation console. MGS5 was actually the main reason for me.
That's certainly true right now, at least where the Xbox One and PS4 are concerned. I've had very little reason to buy much for the PS4 of late, and my Wii U has been seeing most playtime (although I will be making a start on Risen 3 on PC this weekend).
I ordered Murdered: Soul Suspect for the PS4, which is on its way now, but the next-gen consoles other than the Wii U offer very little in the way of compelling propositions at this moment.
There's good stuff coming out from October onwards though. And I'm looking forward to seeing Diablo 3 on the PS4 later this month (not sure why I didn't pick it up for PS3 - I think I was just too pissed off about how Blizzard desecrated it on the PC).
I'd never buy a console for just one game though. When I was an active PC-only gamer, I was always rather disappointed about certain games being console-only, but there were never enough to really tip the scale for me. What tipped the scale was the prominence of Steam, Origin and UPlay in physical media. That's why I prefer the console releases of multiplat titles.