You forgot to add to the list: If you wear glasses you have to buy special lens inserts. I did for my Valve Index, which I've used twice and are now sitting in

You forgot to add to the list: If you wear glasses you have to buy special lens inserts. I did for my Valve Index, which I've used twice and are now sitting in a box. So, if I ever wanted to wear Facebook glasses, I couldn't because they don't sell them in my prescription; not that I ever will. VR only works when your eyes are not skewed.