As it happens I'm leaving for a camping trip in the snow tomorrow morning. It's the sierras (relatively warm) and I'm leading a bunch of inexperienced scouts (so not a particularly grueling trip) but still with opportunities for danger. I was surprised how many of these SV kids signed up and were then pulled by their parents -- 50%! Only a few years ago these trips were immediately oversubscribed, with nobody getting pulled even when it turned out to be blizzard conditions. The kids, at least, are enthusiastic.
Winter conditions in the continental US are, by comparison with the Icelandic conditions in this article, rather clement. The worst I've been in here has been -15 F (-26 C) though that was before the wind...oh the wind! But I have friends who camp out and work in northern Canada, Alaska, and Antarctica. They have to deal with real cold! Me, I go out for a week with my dog and a friend and then presto I'm back in toasty civilization. Not really rugged at all. But it is why I drive a dinosaur-burner.