Didn't live there but looked into moving there (to Whitehorse), so this is only from personal research and talking to recruiter;
Beautiful nature to enjoy.
Relatively cheaper housing (if your job pays enough).
Smaller communities (good or bad depending on your preference).
Somewhat limited choice/somewhat expesive general cost of living (groceries/household stuff etc and not easy shipping).
Higher likelihood of depression/burnout, though some decent employers "try" to offset it with few extra vacation days or even, IIRC, like 1 continental flight (including Carribean?) covered for vacation. Don't remember whether that flight thing included partner or not or if it was a specific thing for Whitehorse/Yukon as a whole.

Edit... completely forgot, wildfires can be a real fucking problem, not just a thing you see in the news (speaking as a metro Van person)