My friend has had a vive for years, he has an entire room dedicated to it so you can actually walk around. Its being driven by a several thousand dollar computer and makes the room unusable for anything else as you have to keep the floor vacant so you can actually walk around. If I had a room to spare, and 5-6k dollars to drop, I'd have it but when you're taking home about $500 a week and don't have an empty room...
The cheaper options, where you're just sitting on your couch, aren't nearly as engaging or interesting (at least to me). Another thing to consider is how many people wear glasses, and how poorly these things work while wearing glasses because they mask them into your face and/or fog. If I want to get custom lens inserts, I'm looking at another $300-500 cost every 12-18 months (that's assuming any can actually accommodate my astigmatism and the prism requirements I need).