Platform: PC. Specifically 2 new graphics cards and a another SSD, plus a better keyboard, to bring her back up to 'Beast' status. I will max everything out at 60FPS on 3 2560*1440 screens goddamnit, and my PC will load in under 3 seconds [Used to with my current SSD, but I filled that up so now it takes 6 seconds. Get a new one, dedicate it to Windows, everything else goes on my other drives; Instant loading! Hopefully.]
Reasons:
1. [Arguably] Cheaper. I buy my games for $30 or less. I do not pay to play online. If I wanted to I could spend nothing next generation and still run games better than a PS4 or Xbone. Not including peripherals that I bought to enhance my experience [Better monitors, a good mouse, excellent speakers], the rig cost me $1000. Its lasted me this console generation, and will last me the next - or would if I didn't want to upgrade it. I could have spent far less, but I decided overkill was worth it. Not to mention that if I'd gone with a console I'd have had to buy that console, a TV to use that console on - seeing as the family ones are always taken - and a PC to use for non-gaming tasks, and that would've cost a fortune.
2. Controls. KB+M wins for any genre I care about, and a lot that I don't. Exceptions, of course, are racing games, and fighting games where the old arcade sticks are king. Oh, and Flight sims. Here comes the fun part though; Flight sims: Buy a Joystick or flight pad thing. Fighting Games: Buy a USB arcade stick. Racing Games: Buy pedals and a wheel, or whatever your prefered control method is.
3. Multipurpose. Not just for gaming. Consoles are finally getting to being able to do simple things like browse the Internet now, but coding, typing up documents, truly modding games [Not just creating maps with a few pre-set blocks and entities], server management, 3-D modelling, texturing - ect. Belong to the PC. A console could try to emulate this, all bar the WiiU would fail miserably thanks to no keyboard - typing is essential and a large part of most, if not all, of the above, and is impractical on a console. WiiU has a touchscreen that could be converted to a keyboard, but it'd still lose in ergonomics to an actual PC; A miniature keyboard is either inefficient or uncomfortable to use.
4. Exclusives. Two words; Star Citizen. One word: Starcraft. Civilization. Total War. Seriously, the number of amazing games I'd miss out on by not having a PC would suck. Sure, the consoles have a couple of exclusives, but I've never seen many of them as anything to get excited about. Played things like Gears of War and the newer Halos and they bore me. Halo CE on the PC was the best Halo IMO. God of War always looked silly, and I could never take uncharted seriously. Red Dead and TLOU looked kind of interesting, but not $300+ interesting. TBH the only exclusives I actually regret not having are the WiiU ones, like Pikmin, but I still haven't finished the original 2 on the Wii so don't have much need for that either.
5. Better quality. If development isn't done poorly, the PC will always come out on top with quality. Better image, smoother gameplay, hotkeys, load times - the PC will offer a smoother experience that looks, feels and sounds better. And its backwards compatible and future compatible [For a generation or two, seeing as DX upgrades mean you need to get a new graphics card that supports the higher DX] too.