You don't have to use a controller. Xim4 allows you to use Keyboard and mouse. Your current build is still fine to play at 1080p on mostly ultra/high so if you don't like the console exclusives just keep enjoying your PC. I game on every system apart from Xbox atm. Using a controller to me is better for some games over keyboard and mouse but in those that it ain't I just hook my mouse and keyboard up to the xim4 and play like I do on the PC.
I am fine, got an i7 8700 with 16gb 3200 DDR4 ram and the 980, I can play at 1440p with high settings most of the time. I like the flexibility and the breadth of games PC offers, such as a strategy and tactical games consoles lack. I will buy a 20xx or AMD equivalent when they are out.