I'll weigh in by saying this:
This will be my last winter keeping anything other than my Kingsnake and my hognose in glass. And even they may end up moving.
It simply has become a pain in the rear end. Granted, the cold has been ridiculous this year and this year is the worst I can remember for heat/humidity. But, as my collection grows and I get older I just want to make things easier on myself, and in turn, better for my snakes.