I don't personally (Go & Quest), but I know lots of people who tried VR and couldn't get comfortable, so quickly stopped using their headsets. I guess fewer people around here are going to regret the purchase for that reason (!), but perhaps some wish you'd chosen an alternative headset?
I don't love that Facebook owns it/it's so locked down.
I bought the Rift CV1 in Jan 2017. I bought the Rift S in May 2019. I bought a Quest a 2-3 months later, and added the Oculus Link cable when it was available.
I have zero - and I mean zero - regrets on any of the above purchases. In fact I have been so thrilled with Oculus and their system, I stuck with them when many of my flight sim comrades were going Reverb and Index, or Pimax.
Rift CV1 is officially retired and back in it's original box for nostalgia purposes. Rift S is being used daily with my flight sims and other Oculus games. No telling how many hours I have in on that Rift S now (I am retired). The dang thing just works, and no muss or no fuss, every time. Quest is being used on occasion, both as stand alone in another room and also as a PC-VR device connected to my PC with Oculus Link. Just depends on the mood I am in and how dark the game is. ( dark looks better to me in Quest display).
DK1, DK2, CV1, Go, Rift-S, Quest. All cool. I'm disappointed in the Rift-S (mainly sound and the controllers), but I don't regret it.
Gear VR for Note 7 - now that's a regret. I only got to use it a couple of times then the Note 7 got recalled due to being a potential bomb. No later Note phones fit it, so it sits here unusable. It also just felt cheap, no match for a Go.