My hopes for PC gaming is that SteamOS takes off and has similar support for new games that Windows has. At least for those of us that want a more streamlined experience and an OS designed first and foremost towards gaming. I always hated having to jump through UI hoops to get a game going.
After all this time you just now went from a newly released console to PC? You should've done that years ago not to mention should have known the differences. Of course whether you get 60fps depends on settings chosen or hardware, it's never a given rule for maxed out games. The minimum frame rate is what matters most. However there are quite a few PS4 titles that do 1080p/60fps and likely many more but always research before you buy anything.
BTW, there is no "next gen". It's a marketing term.
I never got into PC gaming, because I was happy with the last generation consoles, but the new ones aren't that surprising for me. Plus I never knew what I know now about PC gaming. Thought that PC gaming was only for people who play WOW and sit in front of a computer screen with a mouse and keyboard. Now that I know that I can get 1080p 60 fps or more on a PC and can lay back with a controller, I'm with it.