>>42887953When you've lived with it all your life, you get used to it. The trade-off is not being able to handle the heat at all.
-5 to -15 isn't that uncommon during the winters here, though they've been milder recently. I think the coldest winter this far south was just around -30°C
The Swedish cold record is, like, -50°C or something but that's way further north 