>>people (inclduing me) will get sick from it is my big concern

Sick doesn't mean cancer or tuberclosis.

I remember from my childhood watching TV was considered bad, because it was thought to be bad fore one's eyes. Ear phones were bad for the ears and reading on the smart phone in a bus makes me motion sick to date.

Like everything there is a middle ground.

I mean getting sick, as in having to throw up. A bit like motion sickness, though it is not exactly the same thing.

If enough people can't use it because they get uncomfortable from it, because they puke on the floor, that would be a bad thing. I understand that there is a lot of work being done to prevent that. And still I think it is something to look out for.

I've ran demos on the DK2 where only 1 person out of 200 said they got dizzy. They certainly didn't puke anywhere. This was code running in a web browser. I would say, from the hardware standpoint, the issue is solved. It's up to developers to write software.