I’ve always used Windows and am super comfortable with it. I have set up a dual boot with fedora but don’t use it because I have never identified a need to use it. I see a lot of windows hate, so what does Linux have that I need? What can motivate me to migrate? What is a good Linux to have for a desktop + steam?


That should be the other way around, no? What do you need that Linux has (and Windows doesn’t). Otherwise it’s a case of “solution in search of a problem”. You presently do not seem to have a need as you have mentioned, so ideally you should leave it at that and continue using Windows.
While as I implied above only you can answer that authoritatively for yourself, a few examples of what other people seem to like about Linux might help perhaps -
… and so on.
There are many, but I generally recommend Linux Mint or Pop! OS for this use-case.
It is always funny visiting sites that you know are riddled with malware and slipping right past as their scripts attempt to install stuff that isn’t even compatible with your computer.
personally i prefer mint, in large part because i love the cinnamon desktop and mint seems more stable than pop os in my experience. (and if you have nvidia gpus i know pop os can have it pre installed but getting it installed in mint is the click of a few buttons)
Edit to add: See what desktop environments you like, than find a distro that ships with that environment, that will tend to lead to great levels of stability for you.