I rented a VR headset for a month a while ago. I think I bought most of the top games to play around with, but all feel a bit gimmicky and lacking depth.

I'd claim that VR will be niche until it becomes AR. When I can see my keyboard and get multiple floaty screens,that will be productivity. Pokemon Go in AR? Skyrim AR? AR shooters in converted warehouses? Horror games in my house? That'll be games.