I had to think about this one, because in the context of the film the Ice Age seems kinda fun. You’ve got slides and luges galore, some colorful reflections. It’s a blast!
But then I reminded myself – this story is told from the perspective of a mastodon, a sabretooth tiger, a sloth, and a scrat. The only humans in the story lose their baby. A baby that winds up, ironically, manhandled by sharp-toothed beasts for what seems to be at least a full week. It’s a miracle that baby survived. You would NOT want to be a human in this ice age, but it’s only mildly terrible being a human during this polar vortex.