>>300136631
If you're interested enough in the games that are already out that you know you'll be able to sink tons of time into them, then VR is definitely worth it. If you aren't, you might be better off waiting on VR for a while.
With that being said, you should be able to grab a 27" 1440p 144Hz monitor, a Rift S, and a better GPU all for around $1000 if you're willing to blow all of it. 4K isn't worth it for games anyways.