Well, it's not like a lot of realistic simulation games are still being made, though -- they're not accessible and pick-up-and-play enough which makes it difficult to sell millions of copies of them. On the other hand, shooters are pretty much the perfect casual game because anyone can figure out how they work in like a minute. Which probably means PC gamers have been gobbling down casual games like crazy for like 18 years now.
That's true about simulations. I remember back in like early 90's every game store was packed with quality sims. But still, even if simulation, or gaming alltogether is mostly pretty crappy these days, I think there are still enough options, they're just harder to find.
For example flight sims started to become a rare thing a little bit after the year 2000 or so. But even since then, there has been a major release every couple of years. Not major like sales numbers, but as in quality. Think about the Il-2 series for example. Completing all the single player campaigns and missions would probably take several thousand hours compared to the common 5-6 hours that come with most of this console crap. And then there was the modding tools, mission and campaing builders etc meaning that there is a pretty infinite amount of stuff to play. And then there's the multiplayer.. and so on. And it even sold pretty well.
And that is even without going to the hardcore simulation territory. Games like falcon 4.0 or the newcomer, DCS: black shark. There is no need for a new game every year since it takes about 6 months to even learn the basic stuff.
FPS gaming and such will probably quite soon die on PC. It's inevitable. Consoles and the new gaming generations have allowed making shorter games with less content, less need or even possibility to really push the envelope with graphics and hell, they can even charge more money for those games. But I don't think PC gaming will die completely or atleast not before there is console suitable for running more diverse games.
I don't have any special need to play on a PC. I'd be just as happy playing FPS games with a console. If the controls were good and the gameplay was smooth that is. And I believe, or atleast hope it will happen someday. And there's no reason why consoles could not run more complex games either. All they'd need is more power under the hood and decent controllers. No reason why that couldn't happen. It's actually pretty weird that consoles have so limited contoller options these days, after all, the common game pad is only really good for sport games. But until the day someone manages to make a versatile console, there will enough people wanting to play sims and strategy games to ensure a couple of good releases every year.