There is absolutely nothing on PC that interests me that I can't get on a console. Also, in addition to getting nearly all the major third-party games (MMOs and RTSs are about the only things that consoles seem to never get, and I've never been a fan of those genres), I get all sorts of games like Mario, Zelda, Halo, Uncharted, etc., that you can only find on consoles. The last game that was PC-exclusive that I cared for was Crysis, but that's so old now that even my rinky-dink setup can run it at decent settings. Before that the last PC game I played was Quake, and before that Doom II. I grew up on consoles and arcade machines. It's just the way I prefer playing games.
Besides, I've never felt like investing hundreds of dollars into my computer anyway. If I'm going to spend $1000 on a gaming platform, I'd rather just get all three consoles, that way I don't have worry about upgrades, game compatibility, and doing all the regular maintenance a PC needs. I mainly use my computer as an internet machine, with a bit of word processing, spreadsheets, and MS Paint work on the side, and even then I've had nothing but trouble from computers over the years. If it wasn't for the internet being a thing I wouldn't even have a PC. My current PC has been doing pretty well so far, but the historic hassles I've had with the machines and the fact that consoles have taken care of my gaming needs pretty damn well over the past three decades, PC gaming just isn't for me.