FWIW I spend 4+ hours a day in VR on most days and host VR parties for friends fairly regularly. Dizziness and motion sickness can and are still a problem in some situations (lower-quality apps, some locomotion schemes, and overworking your graphics card come to mind), but I'd definitely not say it's a problem for "VR" as a whole anymore since it's easily avoidable by having both good hardware and good software.

I find most reporting done on VR that claims dizziness is a problem is often repeated by journalists that haven't actually tried VR themselves. If you haven't checked it out, I'd recommend finding a friend with a headset and going to town on it for a few hours. :)

And don't worry, AR is (probably) coming eventually.