Okay, how long until Meta Quest is discontinued/sunset?
I believe there is no expectation of a Meta Quest 4 right?
Meta has very recently had leaks of an upcoming lightweight headset. So maybe not a Quest 4 as a direct successor to the Quest 3, but a new headset is in the works.
In all seriousness, given component price increases etc, the Quest 3 remains an incredible deal for PC VR use. Aside from the foveated rendering, the lens/display specifications are very close to Valve's still to ship Steam Frame, which at this stage will almost certainly cost more than the Quest 3 does.
25 PPD VR headset for 499 with inside-out tracking plus controllers etc is amazing value. I've never once used any of the Meta applications, I only use it for VR games on Steam.
I think there is a case to be made one should buy one while you still can, if you want a great value PC VR headset. It's still an excellent choice for stuff like sim racing as well.
I also think the Quest line of hardware is done for. They are clearly much more interested in the glasses lineup, products like the Ray Bans etc, none of which appear to use any of the Quest software stack.