What's stopping you from using Haiku? (as a primary system)

[Sabon]

No native Steam client.
No hardware acceleration.

I second those (as part of the reason but not the full reason)

[MichaelPeppers]

@Sabon

RE: Wine/Proton - Can you play any AAA games using this? I mostly play “Seven Days To Die” (I turn off the zombies because I personally like playing in a sandbox) and Baldur’s Gate 3.

Yes, as far as I know. You can search for games you want to run at ProtonDB to see if they run there, how they work and if there’s tweaks needed.
7 Days to Die and Baldur’s Gate 3 seem to work fine for most people under Wine/Proton.

Generally speaking Wine’s so good nowadays only games with kernel-level anti-cheat won’t work properly, at least in multiplayer (single-player modes might be fine depending on the game)

…also, I want to add, while Haiku can’t run Baldur’s Gate 3, it can run Baldur’s Gate 2 (via GemRB)

[nephele]

@Sabon

RE: Wine/Proton - Can you play any AAA games using this?

On Linux, yes. But not on Haiku