I've had the same experience and it made me wonder, like the OP, about the overall future of VR.
But still I'll hold out, and still I'll try :)
Hopefully higher response and faster refresh rates with quicker and more accurate tracking will evidence the difference between Caraboard and near-term future VR.
fingers crossed
I have a decent amount of off-shore sailing experience in small yachts, and like you, I never get sea-sick.
I haven't tried VR yet, but I was hoping my apparent immunity from motion sickness might carry over to a nice VR experience. Now I'm not so sure it will.
However, I get sick trying to play games with my google cardboard. Nasty, nasty feeling and it takes a good hour to feel normal again... Not a big fan of VR after a few sessions of sickness. I don't think I will play it more to "get over it" either.