Proton/etc isn't 100% there yet- but it's doing so well at this point, I want to experience the trade-offs and see if I can live with them. Always can go back to Windows as a last resort.
I do know some trade-offs already, from my test-runs (done via dual-booting). Proton + controller vibration issues might be the top issue for me. In Rocket League vibrations happen- but like 2-3 seconds after the feedback should have happened- making vibration useless as a feedback mechanism.
I have tons and tons of games installed- many I've tried work flawlessly on Linux so far (or with easy adjustments from suggestions on ProtonDB).
I'm sure there are games I may completely lose out on- and that's what I want to experience for myself- if those gaps are fine- or maybe if committing will actually help prod me to be part of the feedback/dev/etc communities trying to improve gaming on Linux for everyone.
Either way, this is all personal hardware- work laptops are separate- so this should be a fun experiment with very little downside- I don't do anything critical on my primary home PC that requires Windows