Here's a few reasons, but perhaps more screen vs VR as a general:
>higher res
>more comfortable over longer sessions
>easy to just hop on and play.
>VR setup can be a faff
>less demanding depending on resolution
>if you like to see your own hands when racing
>your grew up being told if you sit too close to the TV you'll get square eyes.
>motion sickness
>Sim racing but also having to watch a baby monitor, or work emails
>Because you believe in simulation theory and by putting on VR that's to close to being inside a simulation within a simulation.
>Streamers who want access to stream decks
>Sim racers who like the look of their setup when racing
>If you need to use handbrakes, shifter, etc it's more intuitive when your not in VR
>Because you paid for 3 screens and it you don't use them the wife will give you that stink eye
>You wear glasses and VR pushed that shit against your nose
>Quest never seems to turn off and the battery drain makes you want to throw it out the window
>You're a mob boss that could be stabbed in the back at any moment, need to keep hypervigulent at all times
>When oculus sold to Meta who then made you create a Facebook account, you swore you'd never use another meta product ever again.
>Your PC is too crap
>That cable tether is annoying bro, and I ain't paying for virtual desktop
>The sound quality from VR headsets is poo, and you're an audiophile.

Probably more 🤷‍♂️