0: https://www.thrillist.com/travel/nation/why-scandinavians-ar...
You drink your fish elixir. You try to prioritize time around the little sunlight there is. Brutal winters are not quite as brutal when you just call em "winter".
Plus dry colds tend to not feel as cold. Ottawa at -10 feels worse than Yellowknife at -25 (imo).
Regarding Scandinavia, I suspect the lack of sunlight does add an interesting dimension of toughness to winter that we don't have to deal with here, though.
It's also the people who just don't like the cold. I dress properly, I don't stay indoors, and I hate the cold. It makes just about everything worse for me.
Having lived in both places for several years (first couple of years are never a good gauge due to taxes, relocation, visa, acclimatization, bias), I very much prefer the quality of life in Europe. At least California pays well enough to offset the forest smog I guess.
And yes convenient access to other European countries is also a big plus.
In the United States, a lot of people act like being outside in 40 degree weather is deadly. I also think Americans are less social, especially as they get older so winters tend to be a lot of sitting inside and watching TV.
It varies for sure. I live in a place with overcast and wet winters and I get SAD really bad if I'm not leaving the house, but do fine when I can get out into nature or spend time with friends.
2. Take some Vitamin D and its fine...
3. Dark is cozy too