VR is 50-100 years from "mass adoption" when the headsets are as light as sunglasses are today, either that, or when my kids grow in a culture of VR. A full generation at least.
I work for a Not-for-Profit in Health Care / Aged Care and we have bought Samsung VR headsets to take into the Aged Care Homes and the elderly people there have absolutely love the experiences they had.
VR headsets I put in the same category as the Microsoft Kinect or the Nintendo Wii. They are kind of fun, impressive technologies, but ultimately they are kind of a pain to use.
This. The inertia it takes to actually use it has to become as low as flipping on the TV and channel surfing. Having to locate a headset, strap it on, etc. is not what people are willing to do. Also, people don't like things on their face.